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Dinosaurs

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Thread replies: 327
Thread images: 110

File: ankylosaurus6.jpg (340KB, 1200x900px) Image search: [Google]
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What is the best dinosaur, and why it it ankylosaurus?
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>>2403933
Ankylosaurus because it's your favorite and you're an important and interesting person.
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Triceratops is best because I am easily triggered self absorbed egomaniac with an inferiority complex and anger issues
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>>2403933
Cool chia pet man.
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The anykyosaurus part was a joke. But yeah, it's my favorite. Post yours
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Tyrannosaurus is the most overrated dinosaur.
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>>2403933
Stegosaurus, because of its iconic back plats and tail thagomizers.
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>>2403941
>Just so happen to be my favorite
How so?
It's a giant carnivorous beefy beast with:
1. Strongest jaws of any terrestrial animal
2. Largest and strongest teeth of any dinosaur
3. Had vision better than hawks and eagles, while most non-avian dinosaurs had poor vision
4. Leagues better sense of smell than other non-avian dinosaurs
5. Survived multiple injuries that should have killed it (like wyrex bitten off tail), which show a high level of resilience.
6. Have some of the very best preserved specimens, with some even having skin impressions (incredibly rare) which give a glimpse of what it actually looked like.
7. Have multiple stages of its life, which show it to be efficient enough to hunt at almost any age
8. Was pretty much the most robust large carnivorous dinosaur ever known.
9. It's prey consist of prey that could ferociously fight back, like triceratops, torosaurus (is its own species),


Honesty, I can't even imagine another dinosaur even close to this level f deserved high ratting.
But to each is his own, I guess.
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>>2403933
>Fast
>Smart for a dinosaur
>Iconic sickle dewclaws
>Evidence of feathers
>Basically giant land hawks
Pretty much any large raptor. But Utahraptor is pretty much the dinosaur of my state and is the most robust.
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>>2403933
Heavy bony armor and a powerful clubbed tail that could kill almost anything that dare challenge it. It was near untouchable.

Even its eyelids were armored.
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>>2403933
Dimetrodon are pretty based.
>in before Spinosaur is best dorsal sail dino, get fucked.
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>>2403953
It gets too much attention in the press and every theropod dinosaur is arbitrary compared to it. I'm sick of hearing about T. rex.
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Styracosaurus or as I like to call it face-fucker
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>>2403970
>Dimetrodon
>Dinosaur
?
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>>2403961
>It's also the closest thing to a Jurassic Park raptor.
JP called their raptors"velociraptors" but were mistaken in the original novel for deinonychus. At the time, deinonychus was considered to be about the size as seen in the movies, but have been proven to actually be smaller than we thought. It was still big, but not as large as depicted in the movies.


Utahraptor was published to exist within the same year the Jurassic Park 1 film was first in theaters.
http://www.academia.edu/225747/A_large_dromaeosaurid_Theropoda_from_the_Lower_Cretaceous_of_Eastern_Utah
It was actually as large, if not larger than what was seen in those films.
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>>2403978
Utahraptor in comparison
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I really wish Jurassic Park were real so we could see these things.
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I'm a fan of good ol' Triceratops. Big size, cool frill, neat horn arrangement. It's my favorite of the four-legged dinos.
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For two-legged dinos, I love Utahraptor because I was obsessed with JP as a kid and found out they were more accurate-sized than "Velociraptor", also I loved this cool book called Raptor Red.
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>>2403970
Dimetrodon were closer to mammals, believe it or not.
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>>2403987
Do you think we could keep them (or rexes) in zoos?
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This fellow right here. The greatest herbivorous theropod that ever existed.
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>>2403992
Why did the artists make it look like a zebra?
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>>2403972
>There is a lot of truth behind this.
The only other large predatory dinosaur that is getting a lot of media attention (movies, shows, games) is spinosaurus. But mainly because
1. It's size. Spinosaurus being ~50ft long
2. Very distinct look. Most large predatory dinosaurs like giganotosaurus are usually misconstrued as just kinds of rexes to the masses. Spinosaurus is pretty much unmistakable in comparison.
3. Jurassic Park 3. They essentially inaccurately depicted it as a small Zilla(American 90s Godzilla), which was fictional but effective to bringing it to the mainstream.


In third place is allosaurus
1:07
https://www.youtube.com/watch?v=-U_IRXhodds
As well as a popular option in many dinosaur documentaries and videogames.


But I guess in most cases, you really only need one large predatory dinosaur if any. Tyrannosaurus is the most recognized, therefore the safest option.
But I wouldn't mind at least a scene with a pack of giganotosaurus in the upcoming Jurassic World 2. Maybe even a pack hunting or at least threatening a sauropod.
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brontosauruses are some weird motherfuckers maybe the weirdest to ever be
it's like a surrealistic living seesaw
both ends trying outlong the other without tipping over
probably takes like a full day for blood to reach its head
and it can be like "lol i am way higher than you" to just about anything
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>>2403993
It looks cool, I guess.
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Brachiosaurus always seemed like a giant and vey elegant creature. Kind of like a giant land swan. I imagine it being a beautiful spectacle just to watch it walk on a field as it grazed on tall trees.
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>>2403961
more like a six foot turkey
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>>2404022
>giant land swan

What do youwant us, all dead?
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SLAMMED
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why are current animals midgets?
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>>2404039
Not enough tropics.
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>>2403990
Rex maybe since it was probably a scavenger and not particularly intelligent.

Dromaeosaurs were pack hunters and theorized to be highly intelligent. They'd have to be housed in very specialized and very large enclosures.
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The best dinosaur is, in fact, Saurophaganx maximus
>>2403961
>>2403978
>>2403987
Utahraptor is much larger than JP raptors. A new skeletal diagram has been released showing the Utahraptor was an absurdly robust animal, to the point of losing much of its speed and agility.
>>2403933
>>2403968
Ankylosaurus used to be God-tier until it got downsized to like less than 2 tons.
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>>2404071
Is there any probable evidence that they were pack hunters, or is that just more speculah from Jurassic Park? (I still like that movie, but do you think it's maybe influenced paleontologists a bit too much, to the point of bias?)
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>>2404072
Ankylosaurus was about 6 tonnes, which is overall heavier than the larger stegosaurus. It was lighter than tyrannosaurus and triceratops, but more than heavy enough to scrap down with its armor and weaponry.
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>>2403978
The closest thing to JP raptors would actually be dakotaraptor. JP raptors are more along the lines of relying on speed and stealth. Utahraptor was too adapted to being a bruiser and relied more on power and ambushing >>2404072
Dakotaraptor was built more similar to smaller raptors, which were lightly built animals that actually relied more on speed and agility.
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I dunno bro stygimoloch was pretty badass
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>>2403953
>Feathered

Trash.
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>>2403933
I always liked this creature.

It's sounds can also be replicated, based on the fact its crest was more of a sound resonator that had tubes connecting to its nasal area
https://www.youtube.com/watch?v=QtpSOpUDCb8
There may have also been soft tissues inside the skull that may allow it to have more control of how it sounded like for communicational purposes.
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>>2404071
scavengerfags please go
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Spiney tbchwyff
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>>2404120
easily one of my top 10
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>>2403970
If you're going to bait can you at least do it right and post the exposed spines Dimetrodon?
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>>2404120
Man, the sounds of prehistoric times must have been very strange sounds indeed
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>>2403942
My nigga
I have been a stegofag since I laid eyes on them at the tender age of four or something
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Coelophysis has been my favorite since watching the first part of Walking with Dinosaurs. I wish there was more documentaries about dinosaurs from the Triassic and early Jurassic.
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>>2403953
This

T rex was just a fucking badass in all respects

Based Grizzly hawk
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>>2404165
the ultimate 1v1 animal I say, at least on land
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T rex is my favorite but to spice it up I'll give you guys my second favorite

Gojirasaurus, because it's named after my favorite movie monster
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>>2404165
I would definitely not count out a large allosaur. Less muscular, but definitely more maneuverable and usable forelimbs.
>>2404078
Could you source that claim? I want to believe but everything I've read recently about Anky runs counter.
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>>2404250
Nah, T rex is basically the therapod version of the SMASHED meme, it would eat it alive
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SMASHED
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>>2404252
A dude with a knife>> strong dude. I don't know ewhich one would win, but you're underestimating Allosaurus.
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I like oviraptors but only with feathers on them whether or not it's completely false.

There's also another dinosaur I became obessed with but I can't remember the name. It was fairly small, had a therapod like body but a head more like a triceratops. Someone help a brother out?
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>>2404420
>Strong guy, with a high powered automatic shotgun and marksmen accuracy
Allosaurus did not have strong jaws; actually very weak for its size. The teeth were also pretty small. It also lacked precision in comparison.
Finally, the largest confirmed allosaurus is much smaller, at about ~30ft.
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>>2403933
The deadliest turkey.
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>>2404099
Ebin

Try harder
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>>2403970
Dimetrodon was related to mammals and the they look more like the illustration
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>>2404420
Almost all experts when asked side with the Tyrannosaurus when asked about it fighting even the likes of Giganotosaurus and Charcharodontosaurus, the ones who don't tend to be Jack Horner or Jack Horner wannabes.

Face it, the Rex can severely cripple or kill with one shot depending on where the bite lands due to the insane bite force it has. Pretty much every 1 on 1, predator vs predator fight would go to it
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>>2404250
It's pretty much widely accepted that ankylosaurus weighed about 6 tonnes
http://press.princeton.edu/titles/9287.html
https://en.wikipedia.org/wiki/The_Quarterly_Review_of_Biology

Where on earth did you hear 2 tons? Are you sure that was not for a smaller relative, at least?
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>>2404423
>It was fairly small, had a therapod like body but a head more like a triceratops.

Similar?
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>>2404092
Stygimoloch was only a teenage pachycephalosaurus
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>>2403933
>why it it ankylosaurus?
Because he is a member of the Angilas family of fire monsters (an under-researched branch of thyreophorans), has brains in several parts of its body, and can wipe out the human race.

How can other dinosaurs compete?
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>>2403933
hello mortals
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>>2403933
>ankylosaurus with feathers
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>>2404423
Protoceratops are cuties
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>>2404580
>How can other dinosaurs even compete

You rang?
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I really prefer the dinosaurs with lots of feathers. I don't know a lot about dinosaurs, but lately I've really been liking velociraptor. Are some really cool pictures online.
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So I remember when I was younger I had a dinosaur toy that looked like a Dimetredon, with the large sail on it's back and a similar body, although the face might have been longer.
Now I can't find anything matching that description on google. Did dimetrodon's used to be considered dinosaurs in the 80's? Or is there another dinosaur that looks similar that I am just unable to find?
>here's a xenomorph dino for your troubles
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>>2404655
probably spinosaurus.

dimetrodon was often included in dinosaur toy packs though.
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>>2404664
Might be possible if spinosaurus had 4 identical legs like in pic related, rather than the more popular variation I've seen with two larger back legs. But it also had a shorter neck as well, much like the proportions of dimetrodon, but with a larger snout as I noted.
Was my childhood a sham?
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>>2404669
er correction, not identical but more proportional I guess. The toy figure was molded to walk on all fours and did have proportional legs.
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>>2404655
Back then scientists knew dimetrodon and dinosaurs were different, the general public on the other hand saw 2 reptiles and assumed they're in the same group.
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>>2404423
Leaellynasaur?
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>>2404671
That's probably still the case for a large majority of the US.
>over 40% of people are creationists in the US
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>>2404423
Psittacosaurus?
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>>2404670
dimetrodon or edaphosaurus then
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>>2404677
That's it my man, thank you! I wonder why I couldn't get it to show up when I searched dinosaur with dorsal fin/sail, even though dimetrodon showed up and isn't even a dinosaur.
Can I offer you knowledge on cats or dogs or succulents in return?
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>>2404684
>I wonder why I couldn't get it to show up when I searched dinosaur with dorsal fin/sail
Probably because edaphosaurus isn't a dinosaur either
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>>2404687
Yep just found that out too.
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>>2404648
Ankylosaurus was so fierce, even Godzilla would rather have it as a friend than an enemy. Really makes you think.

By this point it should be clear there was no meteorite impact at the end of the Cretinous. It was actually an angry ankylosaur's tailclub hitting the earth in a soft spot.
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>>2404714
In their first fight G literally ripped it's throat out and burned the corpse
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>>2404719
But they reconciled their differences afterwards.
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>>2404728
That ain't no dinosaur
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>>2404655
Secodontosaurus?
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>>2404250
>I would definitely not count out a large allosaur
Why not? Tyrannosaurids ran them and other like-size carnivores out of existence. No other large carnivores lived alongside T-Rex, they were all out-competed.
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>>2404734
Could be that as well, thanks. Looks a lot like that or edaphosaurus, so it was obviously some type of synapsid from the responses I've been getting. Unless there was another dinosaur that looks similar to these that someone hasn't mentioned.
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>>2404802
Comes later =/= more advanced. They were adapted for very different things.
>>2404429
>He doesn't know about the Hatchet
Also, I was talking about S. maximus. Its basically the same thing as Allosaurus except larger and with some more derrived characters in the neck and wrist.
>>2404479
>Experts picking sides in a fight.
This doesn't happen. Also, Saurophaganax was a completely different beast from Giga or Carch.
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>>2404836
>Comes later
oh no, they coexisted for a million years or two before they died off
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>>2404844
>Allosaurus coexisted with Tyrannosaurids
What?
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>>2404862
>Allosaurus
carnosaurs did you literal bitch
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>>2404864
>The demise of carnosaurs in Laurasia coincided with the demise of large sauropods, along with drastic climate change.
Really makes ya think.
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>>2404866
Right. So carnosaurs couldn't take on the more formidable herbivores that evolved when sauropods declined which they had to hack-n-slash to kill and Rex family could eat whatever they want because they aren't pussies designed to grapple with other giant dinosaurs.
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Ladies pls
>>
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>>2404881
Not thicc enough.
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>>2404886
wew
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>>2404881
is that dinosaur white?
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>>2404869
>Sauropods
>Not formidable
Are you fucking joking?
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>>2404890
relatively, but not as dangerous as a triceratops imo
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>>2404892
Triceratops is incredibly impressive. Don't get me wrong, I'm not shitting on Rex. But killing an animal that wouldve literally been able to shake the Earth alone is something that Rex wasn't adapted to do.
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>>2404893
The cool thing about T-Rex is that it was built to 1v1. I guess sauropods would have to be taken down in a mob or pack, but I think both carnosaurs and tyrannosaurids lived in groups to some extent.

Plus, ever hear of the elephants that used to live in Indonesia?
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>>2404897
>I guess sauropods would have to be taken down in a mob or pack
Not necessarily.
Rex was built to kill things his size or smaller. I still maintain that Saurophaganx would stand a fair chance against Rex due to its agility and a whole another weapon set. Bakker agrees with me on this. I've examined the OMNH 780 claw and it was absolutely terrifying. Literally the size of my head. Ultimately, if they fought, it would depend on the experience of one or the other and how they used their advantages.
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>>2403992
Banana fingers
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>>2404900
well I was implying tyrannosaurus could kill just by taking one huge bite out of a sauropods leg and that would be gg, then rex would just have to wait

but I'm assuming carnosaurs would have hack-n-slashed their way to the kill, running up and taking a bite or slashing from the side while another individual distracted the sauropod from the front or whatever

but I say T-Rex would have had a hard time 1v1-ing triceratops, but in a pair or group one triceratops wouldn't stand a chance
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>>2404893
Carnosaurs really just killed the numerous young in large gangs.
Evidence show that sauropods were not very much into parenting and opted for the seaturtle method: lay massive clusters of eggs as often as possible. Most will die, but many would survive and be large enough to enter herds; assuming they actually lived in herds..


Plus, t-rex also hunted a large species of sauropods called alamosaurus
http://www.smithsonianmag.com/science-nature/when-tyrannosaurus-chomped-sauropods-67170161/
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>>2404907
Fuck, T-Rex is the most bad ass creature that ever lived.

Not discounting homeboy here >>2404900 but.
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>>2404903
Rex couldn't fit his jaws around a large sauropod's leg.
We really have no clue how carnosaurs hunted. But the allosaurids in particular seem far to optimized for agility to just be bite and run away. I suspect they may have leaped and employed there claws to cause even more shock and blood loss.
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>>2404836
>He doesn't know about the Hatchet

>he doesn't know the Hatchet was debunked months after Bakker wrote it
Here, check this out-
http://estudiosgeol.revistas.csic.es/index.php/estudiosgeol/article/view/106/102

Bakker is an awesome guy but his ideas are a bit out there. This was one of his wilder ones. I don't think anyone took it that seriously.
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>>2404912
see >>2404907
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>>2404836
>hatchet debunked in its own post
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>>2404916
kek

he accidentally took a pic from the study I posted here >>2404913
that debunked Bakker's hatchet-head.

a nice mistake from someone that apparently didn't read the paper.
>>
>>2404913
Maybe the babies, they did not hunt the adults. Theres a reason Tyrannosaurids never gained a foothold in Gondwana. They weren't optimized for killing sauropods
>>2404913
A refutation does not mean a debunk. My professor still teaches hatchet bite, along with the people at Cleveland Lloyd.
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>>2404923
what are you studying and what field are you trying to get into?
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>>2404920
I don't know enough about biomechanics yet to argue one way or the other, all I know is that the idea is far from debunked. And I do take responsibility for my dumbass quickly googleing hatchet bite and grabbing the first diagram that popped up as a demonstration.
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>>2404924
Double major paleontology and Petroleum Geology. Would love to be a paleontologist but I also dont want to be a broke ass nigga for the rest of my life.
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>>2404927
how much that running you in student loans?
>>
>>2404923
>A refutation does not mean a debunk.
A matter of opinion. I did my masters on cranial mechanics in Allosaurus, I personally consider the hatchet very well debunked. A fascinating idea though.

I particularly liked how he wove in buttressing and bifurcation of the basitubera, a condition that afaik is unique to Allosaurus and one other allosaur (do you know it?)
>My professor still teaches hatchet bite, along with the people at Cleveland Lloyd.
yep, it happens. Differences of opinion make the world go round.
>>
>>2404934
what school?
>>
>>2404933
None. Track/ academic scholarship
>>2404934
Could you send me your paper? I'd love to be proven wrong by someone who knows more than I. Do you mean Allosaurid or carnosaurs in general? If the former, I believe E. amplexus (If you don't consider it synonymous with A. fragilis) If the later, I do not know.
>>
>>2403942
Don't those plates fill up with blood and become red to intimidate predators? That shit is pretty cool.
>>
>>2404936
Ft Hays State
>>
>>2404936
I enjoy being anonymous, thanks.
>>
>>2404937
>I'd love to be proven wrong by someone who knows more than I.
I'm not proving you wrong, it's just my opinion.

and unless you can point to the basitubera and tell me about its bifurcation and buttressing then we already know I know more than you, no?

No, Epanterias=Allosaurus imo.

It's another of Bakker's works. Not American.
>>
>ctrl + f baryonyx
>0 results

It feels good to be a cut above desu
>>
>>2404941
Im certain you know more than I do, I wasn't challenging you. Is it a Carcharodontosaurid?
>>
>>2404944
>I wasn't challenging you.
I know, I was just stating the obvious. I'm excited for you to begin your anatomy courses so we can discuss in greater detail.

I had to go back and check where I first read it. Bakker mentions it in his Brontosaur Killers paper, the Hatchet paper. Page 152, "Reinforcement of the Basitubera."

He speaks obliquely of Sinraptor. He later did some unpublished work comparing the basicrania of Allosaurus, Sinraptor, and Yangchuanosaurus.

I was mostly just probing to see how deep your professor has taken you. Allosaurus heads are an obsession of mine.
>>
>>2403933
I have this exact model. It's awesome. Had it by my TV for a long time but since I moved it's still packed away. It's my favorite dino, easily.
>>
>>2404676
>Psittacosaurus
my dude
>>
>>2403953
Don't forget the gestation periods were shorter than most dinos of its time and size.
>>
>>2404988
truly the mightiest monster of all
>>
>>2404004
I wanna see T-Rex put down another big theropod/theropod of equal size. JP T-Rex doens't seem extremely bad ass as every time it's come up against another big carnivore, it got smoked (Spino/Indominus).

Put a giga in the next movie as a threat and have T-Rex come kick its ass later on.

>inb4 no rex in JW2
>>
>>2404669
did spinosaurus 4 legs bros
>>
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>>2405006
No.
Technically a "leg" is a part of a human between the knee and ankle. It does not include the foot or the thigh. It consists of the shin and calf only.

In zoological anatomy we refer to the hind limb and forelimb. We may sometimes call these informally "leg" and "arm" respectively. But never "front leg" or " back leg" unless talking to a member of the public in an informal setting. Likewise we refer to the digits and joints of the back "foot" as the pes (latin for foot). The "hand" or what you'd call the front foot is actually the manus (latin for hand).

So in a strictly formal sense Spinosaurus had 0 legs just like every other animal except humans. In a slightly less formal usage it has 2 legs and two arms. In a completely informal sense it probably had 2 or 4 legs depending on what it was doing.
>>
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>>2405012
of course all this formality serves to answer a single conundrum- see attached picture.

Anatomists aren't going to fuck around about how their dogs wear pants, we've answered the question for science. Dogs only have 2 legs, just like all 4 legged animals.
>>
DUDE GORILLASAURUS LMAO
>>
>>2404836
Did you... Read the text in your image?
>>
>>2405012
fuck off ass nigger you knew what I meant

>>2405016
if this were truly spinosaurus's true form, it would be so much fucking cooler, that thing would be crazy to behold

not only that, but a marvel of evolution, like, the only quadrupedal carnivore [*citation needed] AND the only aquatic dinosaur
>>
>>2404907
>http://www.smithsonianmag.com/science-nature/when-tyrannosaurus-chomped-sauropods-67170161/
>A tooth in a vertebrae
eh
>>
I want to hug a fuzzy dinosaur
>>
>>2404071
>highly intelligent
They were probably smart as possums
>>
>>2404071
>Scavengerfag

Please go
>>
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Not putting in pic related it is BULLshit
>>
>>2403933
Triceratops is my favorite.

Large thick bony frill and skull
Large horns and great placement
Strong and very flexible neck, allowing it to always face its horns and shield at its opponent
Can turn its body around quickly, thanks to its leg design (straighter back legs and more sideways front legs)
Can absolutely gore and trample the very largest carnivores.


Even its large, sharp hook shaped beak may have bee used as a weapon. It might have even been an omnivore, as it is usually meat eaters (carnivores, scavengers, omnivores) that have this kind of shape beak, like eagles, condors, squids, and alligator snapping turtles
>>
>>2404907
>Carnosaurs attained gigantic sizes that pushed the boundaries of biomechanics just to kill babies
Hmmmm
>>
So basically, it is possible that tyrannosaurus and triceratops were essentially eating each other?
>>
>>2405305
It's was also a yummy meal to the real best dinosaur
>>
>>2405334
no

The omnivourousness of triceratops was limited to scavanging
>>
>>2405330
What happens is scientists look at modern gigantic animals and see that there's nothing that hunts the largest ones. Whether it's bull elephants or blue whales, animals reach a certain multiple of size over their predators and then those predators can't kill them.

And it's not just limited to mammals. Crocodiles are the main predator on babby crocodiles. But once a certain size is reached other crocs won't try to mess with them- in fact nothing will. They have no natural predators beyond a certain size.

So there's just a question of if adult sauropods have achieved a ratio of size against their predators where they cannot be killed by them. Essentially all paleontologists agree that they did.
>>
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>>2405334
Not so much triceratops pursuing rexes, but rather eating the rexes that challenged it and lost their lives. As in it was not an active hunter, but may eat whatever died nearby, instead of simply just eating salads. Meaning triceratops was probably more of an opportunistic omnivore than we thought but most of its meat would have probably been scavenged.

It's actually possible that all ceratopsians were this way.
http://www.methodquarterly.com/2015/06/an-eddy-in-the-stream-of-things/
>>
>>2405339
>Essentially all paleontologists agree that they did.
Cite this please

And to an extent, I agree with you that some sauropods were untouchable but only the absolute largest. I do not believe that there is an adequate comparison in the modern world for Giant theropods or sauropods.
>>
>>2405344
ceratopsians weren't omnivores any more than cows are.

The idea was based on the observation that they had a bite force sufficient to crush bones. That doesn't mean they used it to crush bones. Tree branches and plant stems are often just as tough as bones.

Their teeth and beaks were evolved for a highly herbivorous diet.

I'm not looking for an argument here, I'm just telling you why nobody in science is taking the omnivorous trike seriously. The idea will be entirely forgotten in 20 years.
>>
>>2405361
>Cite this please
It's far easier and faster to cite the one that disagrees.

do you know the name of the only paleontologist I've ever heard of that thinks adult sauropods were hunted?

he's a famous nut.
>>
>>2405305
>>2405344
Ankylosaurs may have been pretty much untouchable, but those ceratopsians were pretty hardcore for a herbivore.
>>
>>2405369
George Blasing?
>>
Bakker >>>>>>>>>>>>> Horner
>>
>>2405372
that wasn't the one I was thinking of. Does Blasing think they were prey?

Paul does sort of. He suggested theropods would bite chunks off of them without killing them, sort of like mosquitos do to us.
>>
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>>2403933
King Ghidorah is favorite dinosaur
>>
>>2403953
>Had vision better than hawks and eagles
Where's the proof of this? I've read of claims regarding everything else you said, and while I have read some credible theories that T-rex must have had pretty good vision based on how its eyes were placed in the skull, nothing suggested that it outclassed animals adapted to soaring so high above their prey that their prey cannot possibly anticipate them as they swoop down.
>>
>>2403933
>>2403942
>>2403961
>>2403968
>>2403973
>>2404078
>>2404083
>>2404120
>>2404092
>>2404134

>All these people posting tasty snacks
>>
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>>2405366
>Cows do not even have upper front teeth and mainly have wide molars mainly flat from the top
Ceratopsians seen to have very unusual teeth in comparison to other herbivorous dinosaurs.

This with their bone crushing biteforce and pointed hook shaped beak shows it to being more capable of eating meat compared to other herbivores

DISCLAIMER:
This is not to say it was a carnivore, per say. Just that meat may have also been in its diet
>>
>>2405728
Sorry for any typos in that image. I was trying to make it quick before my laptop died.

It's charging now
>>
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>>2405676
Loads of citations in the description
https://www.youtube.com/watch?v=3rtQPo4HKLY

It likely acquired this to more accurately track and attack horned triceratops that could easily kill it if not precise enough with its attacks.
>>
>>2403933
The most horrifying dinosaur that even made thee baddest rexes shiver in fear
https://www.youtube.com/watch?v=KY5ArW3Ncfo
>>
>>2405728
yeah, no, I understand what you're trying to say.

the problem is a paper has already been published on trike teeth showing that they were intermediate between prosauropod-type leaf teath and hadrosaur tooth batteries. They weren't evolved for shearing, they had thicker and thinner enamel streaks causing them to wear into molars for chewing.

This paper is well supported and confirmed by examinations of trike tooth structure and wear patterns since. I know you haven't read it, but you're trying to explain things that simply don't matter. You see the overall shape of the single tooth. Scientists see the internal structures and shape of the tooth battery as a whole.

Still not trying to argue this one with you, just pointing out that no matter how hard you try to convince people, this idea is going to be forgotten very quickly. It's a bad idea. Shallow and childish.
>>
>>2405739
>distance acuity is based on size of the eye and distance between them
>use hawk as your model for rex acuity
>rex has bigger eyes spaced farther apart
>OH SHIT USING A HAWK AS A MODEL FOR REX VISION, REX HAS BETTER VISION THAN A HAWK!
circular.

when then used a pigeon as their model they found that rex had vision slightly better than a pigeon. if they used a blind dog as their model they'd find rex had slightly better vision than a blind dog.

It's weird how few people actually read and understand this stuff.
>>
>>2405782
>when they used a pigeon as their model they found that rex had vision slightly better than a pigeon.

> Using the ostrich model for acuity (MAR 1.6) and the pigeon model for the t/MAR ratio, Tyrannosaurus would have had a disparity threshold t 9.6, similar to that of the pigeon.

from the same paper.
>>
>>2405782
Use a combination of eagle, ostrich, and crocodiles as the model for the eye. Essentially using all available ends.

Conclusion being the eyes were very efficient, as well as most likely having excellent daytime and nighttime vision. This in fact mixed with the sheer size of he eyes show them to be 13x more powerful than a human's, compared to eagles that are only 4-8x stronger That's a lot of power in those eyes.


Based on the positioning of they eyes (which matters a lot for depth perception), its binocular vision was actually greater than a hawks.
>>
>>2405791
read the paper.

its vision was only better than a humans if they pretend it's as good as a hawks to start with.

it's as good as a pigeon when they used the pigeon model.

they didn't use all three at once, each model produced wildly different results. Why are you arguing a paper you clearly haven't read?
>>
>>2404886
THERE'S NO WAY

THERE'S NO FUCKING WAY DINOSAURS WERE THAT BIG!
>>
>>2403942
While there's a lot of acceptable choices this one just has to be the best one. Stegosaurus is king.

Just gave my newborn nephew a stegosaurus plushie. He will grow up always loving best dinosaur.
>>
>>2405800
Your mother exists.
>>
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>>2405800
Cryptic footprints from Australia suggest possibly even larger
>>
>>2403992
FUCK. YES. came here to post this. based ass dinosaur
>>
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>>2405771
At best, it confirms that triceratops primarily ate vegetation and chewed a lot of it. This does not actually refute what I had addressed.


Although yes they evolved from herbivore ancestry and were indeed mainly used for plants, so is the purpose with brown bear eerily similar molars; of course not a perfect match, but pretty damn close and much closer than what is seen with other herbivorous dinosaurs.
Ceratopsians have molars more similar to that of a brown bear. Which just so happen to be an omnivore that primarily ate plants, but would also eat meat if found.
Both these animals also just so happen to have jaws capable of crushing bone.

Ceratopsian beaks are still pointed and hooked shaped, which is more similar to a condor, squid, or alligator snapping turtle
>>
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>>2405829
The Triceratops skull looks much more like a gigantic parrot skull than that Condor skull, stop memeing.
>>
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>>2405829
Yes just like gorillas are clearly carnivores because of their huge fangs.

Your argument could be applied equally to prosauropods, stegosaurs, therizinosaurs, and iguanodonts,. And to modern iguanas for that matter. There are in fact very good reasons why the argument is wrong, primarily to do with the shape of the teeth and angle of the serrations, but also dealing with the failure of dinosaurs to evolve carnassials, but I assume you don't want to hear that because you're personally invested in the truth of a bad idea you've got stuck in your head. Which is fine, just don't expect anyone that's studied dinosaur dentition to take it seriously. It's based in a lack of knowledge. A little knowledge is a dangerous thing.
>>
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>>2405829
>much closer than what is seen with other herbivorous dinosaurs.
again, ALL herbivorous dinosaurs have teeth shaped like those of triceratops.

the only reason hadrosaurs appear to have something different is because they had hundreds of them packed together to form a long battery of teeth that looked like one giant tooth. If you look at this pic you'll see it's made up of individual teeth shaped essentially like the triceratops'. Unfortunately you can't see from this pic that they're all serrated. But you can google it if you like.
>>
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It's a bit plebby to choose a theropod but Australovenator wintonensis, it's Australia's most complete therapod so far by a mile
>>
>>2403986
What's with the butt fluff?
>>
>>2405833
>More comparable to Psittacosaurus>>2404676 or other primitive relatives.
>The condor skull I posted practically looks more like a trike (beak shape and overall skull appearance in comparison) without horns, frill, or teeth
Parrots are primarily herbivores that mainly eat fruits, nuts, and seeds. However, they do sometimes eat meat (mainly scavenged) if given the chance.
https://www.youtube.com/watch?v=6LBzfniRa70
https://www.youtube.com/watch?v=0eZAG6i3-LY
https://www.youtube.com/watch?v=6hBEsapQqb0
https://www.youtube.com/watch?v=St_IhYJXIcc

The main thing that prevents their meat consumption is the fact they generally cannot kill things and carcasses tend to attract larger and more dangerous scavengers like canines and felines.
Trike could easily kill opponents ranging from the smallest dakotaraptors to the biggest rexes. Trike also tend to be targeted, meaning despite not being an active hunter, it certainly had more meat available to its diet.
Perhaps ceratopsians even ate meat as a defense. Similar to mammals eating the placentas of their babies, they may have eaten the carcass to reduce the odds, thus prevent disease and conflicts. Or maybe, as a part warning.
>>
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>>2406066
>Perhaps ceratopsians even ate meat as a defense
>explaining why something might have happened before you have evidence that it did.
>>
>>2406076
>Ignoring the evidence>>2405344>>2405728>>2405829 which have not actually been debunked, but rather giving uphold an alternative view.
>Even replies to a response with evidence to support my claim further, such as with the parrots eating meat (mainly scavenged) if given the chance
>>
>>2406076
You are basically helping his claim with that image.

What he is saying is that triceratops was a primary herbivore but could eat meat. It had the tools to kill and even process meat like a grizzly bear and had meat walking towards it as challengers. Meaning the option is much more available for triceratops. Or at least, more than it is for a squirrel

Is it really that hard to imagine? If a squirrel would despite being less capable of processing meat, why not triceratops?
>>
>>2405897
does it trigger you, spergatron?
>>
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>>2403933
The giant armored cheetah with robust horns.
>>
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>>2403935
>>2403933
>Ankylosaurus
>OP posts a Euplocephalus
yall aint real Ankylosaurus fans
>>
>>2404886
UGHHHH THICKER
>>
>>2406142
Well, then my favorite are the clubbed tail members of their family.
>>
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>>2406142
Oh wow, it just so happen euplocephalus lived around the same time and areas as ankylosaurus. Does this mean it might be a surprise announced dinosaur in the Saurian game?
>>
>>2406171
>Unlikely
They already have another large ankylosaur called denversaurus, which was 1 tonne heavier. It's also more distinct and seem to be better for in game leveling systems.

I would imagine if anything because of the tails, euplocephalus ingame would essentially just be a different skinned ankylosaurus. As in it looks a little different, but does not actually ad much or anything.
>>
>>2403933

I love the anklyosaurus, but I've also always loved velociraptors. I need to get around to watching the Jurassic Park series, because from what I've heard, they feature prominently in it.
>>
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>>2403933
fuck out of the way soft skulls
>>
>>2406110
No, I was asking as I'm unused to seeing it. Is this a "put feathers on all dinosaurs!" thing or is there proper proof of triceratops having butt fluff?
>>
>>2406294
yes, but they are more quills then feathers
>>
>>2406296
Like those "proto-feathers" I've heard mention regarding dinos?
>>
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BATBIRD
>>
I know its not a dinosaur but there are no other appropriate threads for this. Mosasaurs. M. Hoffmanni, T. Proriger, P. Saturator I love them.
>>
>>2403987
what's the point of feathered arms?
>>
>>2406473
Steering
>>
My favorite dinosaur is the therinzosaurus. It just has some badass claws.
>>
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>>2404022
>>2404008
>>2404430
>>2405811
>>2404886
>>2406149
>>
>>2403953
>feathers

NOOOOOOOO FUCK OFFFFFFFFFF!!! DINOSAURS LOOKED EXACTLY LIKE THEY DO IN JURASSIC PARK!!!!!!!! FUCK YOU SCIENTISTS
>>
>>2403933
>Mr. Hardhead
This guy head buts all his problems away.
>>
>>2407347
I heard somewhere they didn't actually butt heads, but instead had shoving matches with their heads between members of their own species.
>>
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>>2403933
The best avian dinosaurs
>>
iguanodon for the thumb spikes
>>
>>2407383
It's like an oddly shaped hadrosaur
>>
>>2406171
Saurian takes place in the hell creek formation Euplocephalus is at least 8 million years older than that formation and Ankylosaurus
>>
>>2407371
>claws
>terror bird
>>
>>2407603
Gorillasaur
>>
>>2405030

It would make more sense for an aquatic animal to have 4 limbs of similar size rather than a biped. Given the shape of Spino's head, the forelimbs don't make a great deal of sense.
>>
>>2405339

Orcas hunt blue whales.
>>
>>2408061
there's no evidence they successfully hunt adults.
>>
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>>2403933
open the door
get on the floor
everybody pick a dinosaur
>>
>>2408061
Orcas hunt grey-whales and sometimes humpbacks, not really bluewhales. They actually tend to avoid adults
https://www.youtube.com/watch?v=JIF7XWe_3Sw
https://www.youtube.com/watch?v=-lw8_SAtX8o
Only unless they are trying to get between the mother and calf; primarily if it is a lone mother with no other adults. They hunt babies by using their numbers to eventually separate and drown them (because they are mammals with lungs and have no gills)
https://www.youtube.com/watch?v=2zzxKQVCHyI
>>
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>>2403933
I find the smaller specie way coller
>>
>>2403933
AKA, 'The Spitter'


I know there is no actual evidence it spat venom or had a frill. The novels made it up to reflect how little we really know about dinosaurs, since all we had were remains left from their bones. Meaning they might be weirder or more bizarre than one might think at first.
>>
>>2408561
The venom thing was an actual scientific hypothesis at the time. Their teeth and jaws are so weak paleontologists thought they wouldn't be able to deal with struggling prey. So they assumed they must have venom to render their prey immobile before eating.

Recent studies have shown their teeth and jaws are about as strong as alligators, which have no problem with live prey. But there's still a strong suspicion they might have eaten fish because of the shape of their teeth and snout. Suspiciously crocodile-like.
>>
Stegosaurus masterrace. He is the dinosaur we deserve.
>>
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not a dinosaur but I refuse to leave it unmentioned
>>
>>2404008
An animal so big it needs two brains and it's still one of the most retarded things to ever exits.

Truly majestic.
>>
>>2403992
Whats the name of this book? I read it a long time ago and forgot about it.
>>
>>2403933
Mad stone collector
>>
>>2404430
>see one in Ark
>look it up
>it didn't look nearly as cool as it does in the game
fuck Ark
>>
Sup faggots
>>
>>2403992
Are they really that fucking big?
>>
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>>2409033
The sizing and even the more generic theropod standard stance is now outdated for this creature. it's still massive thogh.

But otherwise, the info is pretty accurate.
>>
>>2409029
>Nessie
It's funny how we sometimes make up monsters in our minds that just so happen to have exist in the past.

Similar to Hollywood making exaggerating the size of snakes and crocs to be colossal, only for humans to later find out they essentially existed. We just call them titanoboa with sarcosuchus and deinosuchus.
>>
Lads, that Princeton "field guide" a decent read? Bookshop has them in
>>
>>2409412
If you can hand Greg S. Paul's odd hypotheses on phylogeny and taxonomy of a few groups, and his somewhat shrink-wrapped illustrations, then sure, go for it.
>>
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>>2409412
It's great if you're into dinosaurs and want to know more than the casual public. It's one of a handful of college 100 level dinosaur textbooks I'd really recommend. A couple others are "The Dinosauria" and "The Complete Dinosaur." All of them are aimed at adults with an interest in biology. They don't talk down to you and they cover a broad scope of topics related to dinosaurs. The only real problems I have with them is some of the info is outdated by the time you read it, and once you've read one you may find yourself reading journal articles and such. They're gateway paleontology books.
>>
>>2409437
Housemate has The Dinosauria, looks decent. Want to buy a few books before tax time
>>
>>2409454
keep in mind you can also read any of those free if you have a JSTOR. And I think JSTOR is offering free subscriptions allowing 3 books or articles/month.

just a thought in case you don't want to buy the physical text.
>>
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>>2408645
i think this is it. I have one home, and it looks like that
>>
>>2405837
Gorillas are predominantly herbivorous omnivores.
https://www.google.ca/amp/relay.nationalgeographic.com/proxy/distribution/public/amp/news/2010/03/100305-first-proof-gorillas-eat-monkeys-mammals-feces-dna
>>
>>2409437
Holy shit that picture.
>>
When the 'saurs existed, was it in the same period of elevated oxygen levels? How else could such massive organisms have been supported? Insane.

Also, what would be the closest thing alive that tastes like them? I need this. The fact that there are so many things in Earth's history that I will never taste or pet just kills me inside
>>
The fact that there are people who still believe that Tyrannosaurus was an obligate scavenger saddens me
>>
>>2405849

>trex with raptor feet for hands
>>
>>2409646
>Gorillas are predominantly herbivorous omnivores.
yes, that was the point. Very good, you get a gold star.
>>2409704
>was it in the same period of elevated oxygen levels?
no, there was less oxygen then.
>How else could such massive organisms have been supported?
oxygen isn't a limiting factor to vertebrate growth. Food quality and availability is. Having lots of poor quality food makes vertebrates grow larger.
>what would be the closest thing alive that tastes like them?
chicken, turkey, duck, alligator.
>>
>>2403953

Tyrannosaurus is very different and unique compared to other generic superpredators of the cretaceous, he is the only coelurosaurid "big carnivore" if you don't count other tyrannosaurids
>>
>>2410032
>he is the only coelurosaurid "big carnivore" if you don't count other tyrannosaurids
that alone should make you question it being a coelurosaur.
>>
>>2409456
Might as well rack up a few hard copies before tax time
>>
>>2410201
Yeah I used to do that too.

Now I find myself sorting and destroying 15 huge binders full of printed articles because I never read paper anymore.
>>
>>2410206
I meant books, wouldn't be foolish enough to print papers unless I specifically needed them, not doing research just need to develop my knowledge.
>>
>>2406084
>his claim
>he is saying
Listen mother fucker if you're going to try and samefag at LEAST take off your fucking NAME first you god damn mongoloid.
>>
>>2410249
I didn't wrote that part. Someone just used my name to discredit me.
>>
>>2410316
>Someone just used my name to discredit me.
sure
we believe you

there's 14 people here and none of them give a fuck about you but I'm sure you're right.
>>
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>>2409764
Nah, nowhere near the size. Claw is a cast, mouse for scale (didn't have a scale bar)
>>
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>>2410407
>>
>>2410408
is that the original material there?
are you a supervillain?
>>
>>2410409
>is that the original material there?
Yep
>>
>>2410411
you didn't answer the supervillain part.
>>
>>2410415
That museum, Australian Age of Dinosaurs actually opens up its type room to the public so I could have potentially taken that photo from behind the railing from a fairly low angle and cropped it.
>>
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>>2410418
>I could have potentially taken that photo from behind the railing from a fairly low angle and cropped it.
yes, but that doesn't explain your mouse "for scale" up in there, does it?

I have hundreds of pics of type specimens, none of them are taken with my personal shit in the frame. I do believe I'd get fired for that.
>>
>>2410424
It's not my personal stuff, it's the mouse for the projector show. Snapped a couple of pics of my own after a tour. These specimens are all long published so I'm not doing anything untoward.
>>
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>>2410427
>sorry guys I accidentally your holotype
>wait, WHAT?
>yeah I dropped a computer mouse on it
>YOU WHAT?
>yeah, computer mouse. Dropped it on your holotype
>WHY THE FUCK WOULD YOU?
>just an accident. I needed a mouse in the frame
>why did you need a mouse in the frame, Nate?
>I couldn't find a scale bar
every fucking time.
>>
>>2410429
Christ, what sort of a madman do you take me for. It was right near the edge of the table, didn't have to hover over the spevimens at all. I'm not game to do the cobwebs for instance. I'd crop some pics of the sauropods but I'm a bit busy.
>>
>>2409023
>ark therizinosaurus
>cool
thats some pretty gross taste my man
>>
>>2406125
>trips
>falls
>can't get back up
>>
>>2410052

What do you mean? Actually interested
>>
Was NZ as close as we can get to the land of the dinosaurs then? Before man brought mammals and shit, birds were the dominant form of life there, having taken up ecological niches that typically see mammals in it on other lands. Lots of flightless birds like kiwis and moas. Bet they tasted even better than dildos, fukken horis
>>
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>>2404075
Well the original jurassic park pack hunting came from finds of multiple Deinonychus teeth of different individuals and ages being found along side Tenotosaurus which could interpreted as them hunting together to bring down a far larger animal foot prints attributed to Deinonychus also show different sized animals walking along side each other so its a safe bet at least Deinonychus was gregarious also multiple Utahraptor have been found to have died together in a mud trap likely trying to eat a Hippodraco but weather this was a pack or just a couple of would be scavengers attracted by a struggling or dead animal is still up in the air
>>
>>2408561
Don't forget the JP version is much smaller than the species really is, and really I just chalk up it's spitting and frill as a few more mutations the scientists added along with the frog DNA.

Seriously JP dinos are all mutants.
>>
>>2410853
>multiple Deinonychus teeth of different individuals and ages being found along side Tenotosaurus
it wasn't teeth, it was whole skeletons.

this find was originally interpreted as pack behavior but the interpretation was dropped when they discovered that the individuals had been killed and eaten by other Deinonychus.

afaik there are no footprints indicating pack movement in Deinonychus or any other raptor.

>tl;dr: you're making shit up again.
>>
>>2407361
well, we will never know for sure, that much we do know
>>
>>2410873
No they gave it frills because that was at one point a theory. Same with the spit, actually
>>
Found out the reliable one of the two digs I had planned to go on over summer isn't on this year, head paleo has had very little luck chasing mammals and wants to do some sieving probably about 2300, 2400 kilometres away from that regular site
>>
>>2411187
mammals are so boring
>>
>>2411199
This
>>
>>2406303
There's no proof Triceratops had butt fluff, that anon is full of shit. Psittacosaurus had it. Philogenetic bracketing is somehow seen as actual, final "proof" by idiots.
>>
>>2403940
>The anykyosaurus part was a joke.
Woah, not funny dude. I don't know what passes in this 4chan place but I wouldn't play jokes like that on my crew over on reddit, we don't allow that stuff.
Anyways, my favorite dinosaur is the mighty T-Rex of course!
>>
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>>2410873
I'm pretty sure it was also a baby in the first film. This would explain its seemingly innocent exploration, curiosity, and extended apparent fascination with a human.


In Jurassic World, they had a hologram of dilophosaurus that was larger. and more comparable to the actual size
>>
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>>2411432
Actual sizes
>>
Jesus fucking Christ, like half of you fuckers just spew random blog posted bullshit. Read the goddamn papers before squawking like retards.
>>
>>2411449
what's the last paper you read? How many do you read per day?
>>
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>>2411455
Not him, but http://www.sciencedirect.com/science/article/pii/S1342937X17300527
>>
>>2411455
Likewise, not him but I was reading a massive paper about Australian tectonics this afternoon. Most of it I knew already, bit of a waste of time but I was a bit worse for wear today so it wasn't too bad.
>>
>>2410485
why? le arms meme?
>>
>>2404075
>birds and crocodilians live in groups
>???
>>
>>2405811
>cryptic footprints
keep talking
>>
>>2405376
a fucking pack/hoard of giganotosaurs would probably dine and dash, taking a huge bite while another distracts and letting the fat bitch bleed out after hours of doing this
>>
>>2411508
>massive paper about Australian tectonics
Care to share a link?
>>
>>2409764
the tyrannosairid megaraptora was debunked last year by an allosaur with tiny arms and 2 fingers to boot

there now thought to be very basal Coelurosaurs, possibly carnosaur depending on who you ask
>>
>>2411640
>the tyrannosairid megaraptora was debunked last year by an allosaur with tiny arms and 2 fingers to boot
I'm sorry, only a few months into reading about dinosaurs since fighting over books in the library as a kid, can you walk me through the reasoning?
>>
>>2411851
elements of the hands are exceptionally basal for tyrannoraptora, features that things like Guanlong and Deinonychus share are totally absent in megaraptora and the known braincases are described as like neither an allosaur or a tyrannosaur and in general there bodies are a bizarre mix of carnosaur and coelurosaur features.

tl;dr They show a confusing mix of traditionally carnosaur and coelurosaur traits that makes them hard to pin down

if you want to read further read the articles describing Gualicho and Aoniraptor one was described as a neovernatorid the other a Tyrannosaur and they both appear closely related to Deltadromeus. To top it off they appear to be the same animal. That's how confusing these fuckers are
>>
>>2403933
My favorite ceratopsian.
>>
Do you guys think dinosaurs could be gay like a lot of animals can be?
>>
>>2411928
Ask the internet.

Actually never mind you don't want to see the pictures that are there.
>>
>>2411928
well we already have gay penguins and ducks, so yeah, i don't see why not
>>
>>2411455
I'm him, I try to read at least one paper per day. When I'm researching I may not finish even one since I try to flesh out the tiniest details. Honestly though, you don't even have to read the whole paper; read the abstract, results, discussion, and look at the figures. then read the rest if you want. Last paper I read was Evan et al., 2009; Endocranial anatomy of lambeosaurine hadrosaurids.
>>
>>2412216
In examining the endocasts, did you notice that the juveniles had semicircular canals at a less abrupt angle than adults, and if so, why do you suppose this is?
>>
>>2411928
https://en.wikipedia.org/wiki/List_of_birds_displaying_homosexual_behavior

See also: >>>/d/
>>
>>2403992
I was asking about this dinosaur a few months ago. Thank you for posting it.
>>
>>2412285
Are you referring to the angle between the rostral and caudal semicircular?

If so this could largely be reflective of some amount of lateral compression, though its not really present in the endocast itself.

In most animals, the ssc are generally held at near right angles to one another.

Is there variation? Maybe. Is it biologically significant? probably not.
>>
>>2412386
The rostrocaudal angle of the lateral canal tells us the angle the head was normally held at.

It varies in relation to the endocast in juveniles and adults, perhaps indicating they held their heads at different angles during growth?
>>
>>2412386
Also note the variation in species in the angle and distance from the foramen magnum to the dural peak.

This indicates a shortening and steepening of the basiocciput over evolutionary time, perhaps an interesting point given Witmer's seminal work on craniofacial plasticity in archosaurs. This paper was also a product of Witmer Labs....

Do you suppose such a feature is useful for diagnoses at the superfamily rank when it varies generically? What superfamilies are we currently diagnosing based on the length and angle of the basiocciput? What would Witmer say about that?
>>
>>2412411
Well you are going to have variation within species and even among individuals.

Look at the tyrannosaur endocranium paper also by Witmer and Ridgely (2009).

Even though they show three different T. rex specimens, there is significant variation among the endocasts (not including CMNH 7541).

The general morphology is retained, but specific details can vary.

As for the angulation, I would say it is likely to be related to ontogeny, even though only Corythosaurus is represented by a growth series.

As far as I am aware, phylogenetic reconstructions have yet to be greatly applied using endocranial data for hadrosaurs and even with other groups.

Phylogenetic implications are usually little more than a small subsection within the paper.

Paleoneurology is still a developing field with only a few groups covered, but I think in the next few years, it will become far more significant.
>>
>>2412407
I'm not seeing anything I would view as significant in the lss that I would chalk up to ontogeny.

I can see some change in the forebrain angulation for the large hypacrosaurus, but otherwise, I see nothing regarding variation of the semicirculars.
>>
>>2403933
Velociraptor
>>
>>2412538
Think bigger.
>>
>People talking about lame herbivores when much cooler dinosaurs exist

Step it up
>>
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There is only one best dinosaur, but let's look at the top 10.

10. Pachycephalosaurus
9. Iguanodon or Anatotitan
8. Triceratops
7. Ruyangosaurus
6. Ankylosaurus
5. Saurophaganax
4. Stegosaurus
3. Therizinosaurus
2. Dakotaraptor
1. [spoiler]it's T-Rex fuck you[/spoiler]
Acros are an honorable mention. And if Spinosaurus was really quadrupedal, it would be a contender for top 5 coolest dinos for sheer uniqueness.
>>
>>2412544
My top 10:
1. Velociraptor
2. Pachycephalosaurus
3. Ostafrikasaurus
4. Therizinosaurus
5. Styracosaurus
6. Tapejara
7. Ankylosaurus
8. Tyrannosaurus
9. Dimorphodon
10. Carnotaurus
>>
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>>2403933
Best dinosaur is dimitredon
t. Dimitri
>>
>>2409029
Ogopogo!
>>
>>2404902
Patrician
>>
>>2404597
And greetings to you, pathetic creature.
>>
>>2404597
>>2412576
That would be a big fight
>>
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>>2411433
>>
>>2412599
>Outdated
Same with >>2403978 and >>2409155, it is smaller than thought.
>>
>>2412634
post something updated
>>
>>2412544
iirc there was a study that implied that despite its smaller size on average acro was more massive than rex
>>
>>2412638
I did. That's the verified updated size chart of both specimens.

Dilophosaurus was mostly slender and long, not so much tall. It's femur was larger than its tibia, which was lot particularly long.
>>
>>2412708
so you said "outdated" and then said "same with" but did not mean those were also outdated? very confusing
>>
>>2412707
>Followed by: "it is smaller than thought"
Those examples of the dinosaur being smaller are the more updated versions of outdated larger versions of the same creatures. Just look at their context of being posted, which were responses to show more accurate sizes.
>>
>>2412721
Nigga, you can't even respond to the right anon, how the hell are we supposed to know what you mean?
>>
>>2412732
you mean he wasn't asking for the context of the 3d dinosaur mass study? anyway they tested a mass estimation method on a ostrich skeleton then used it on various dinosaurs,

they tested MOR 555 and BHI 3303 Wankel Rex and Stan iirc

and NCSM 14345 and found even the lowest "emaciated" estimate for NCSM 14345 was above what they considered above the plausible weight range for rex
>>
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>>2406294

There is a specimen with skin impressions that preserves raised nodules; which could be the base for a thick quill or elongate scale. Probably not fluffy, more like spiky. Some kind of epidermal structure, but equating those with psittacosaurus quills is a biiig stretch, and equating them with protofeathers is an even biiiiiger stretch. Most people can't fucking distinguish between or handle the nuance of integument.

I should know, I touched the actual fossil today.
>>
>>2410915
There are footprints, from Asia. Can't find a link rn cuz mobile sucks, but it exists.

And one paper (Roach and Brinkman, 2007(?)) does not a consensus make. Bakker and others hold to Ostrom's original interpretation (Ostrom being a far better interpreter and anatomist than most scientists currently in the field).
>>
>>2412707
You can't trust a single one of those fucking volumetric studies. Waaaay too many assumptions and guesses. The only reliable method is the circumference of the femur, which really only gives one a range of estimates.
>>
>>2411872
Could you link those for me? That sounds fascinating. Expound on what you think Tyrannosaurids are then...
>>
>>2412927
Gualicho
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0157793

Aoniraptor
https://www.researchgate.net/publication/304013683_NEW_THEROPOD_FAUNA_FROM_THE_UPPER_CRETACEOUS_HUINCUL_FORMATION_OF_NORTHWESTERN_PATAGONIA_ARGENTINA


Tyrannosaurids are more or less the same as they are now regardless of the position of Megaraptora. We have a fairly good picture of there evolutionary history from their small vaguely Compsognathid Jurassic origins though to transitional forms like Timurlengia and up to the giant Cretaceous forms, the Interesting in them being tyrannosaurs would be the implication of a complete global faunal turnover In the mid Cretaceous with tyrannosaurs replacing Allosaurs globally(barring a single Maastrichtian skull fragment that appears to belong to a Carcharodontosaur)
>>
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Hadrosaurid
Thread posts: 327
Thread images: 110


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