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Extinct Animal Questions
Topic Started: Nov 26 2013, 10:24 PM (193,422 Views)
Incinerox
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Āeksiot Zaldrīzoti

Granted, tigers are very territorial as it is. While tyrannosaurids are seemingly at least capable of gregarious behaviour, at least on par with the bear.

I'd say it's quite reasonable.
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Furka
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The Spino is the one we know less.
For Arceus sake, I wish we had more materials that could hint about their behaviours ...
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Paleop
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Paleopterix

I love safari ltd.'s figurines especialy the dracorex, but how accurate is the coughcough* 'wide' midsection? cough also could pachys have feathers?
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the second one is my figure, I had to take a picture do to no overhead photos existing
edit: the bulge on his sides are not where his arms connect se below:
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Edited by Paleop, Feb 17 2015, 12:16 PM.
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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

Pachycephalosaurs could definitely have have protofeathers or whatever the ornithischian equivalent is. such structures are known from both ceratopsians and basal marginocephalians, so feathered boneheads is certainly within the realm of phylogenetic bracketing.
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Paleop
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Paleopterix

this is a stupid question, but what would be some interesting dinosaurs to draw?

I'm sorry if this question is stupid or doesn't quite belong
Edited by Paleop, Feb 17 2015, 11:11 PM.
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Acinonyx Jubatus
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Paleop
Feb 17 2015, 11:11 PM
this is a stupid question, but what would be some interesting dinosaurs to draw?

I'm sorry if this question is stupid or doesn't quite belong
Practically anything. Agustinia, Microraptor, Quantassaurus, Animantarx... There is not a single dinosaur which is not cool-looking in some way.
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CyborgIguana
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Even the ones that are basically just birds with teeth?

Well I guess they could still be cool looking, just not as "different" to us as most dinos. :P
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Paleosaurus
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I already know the answer to this, but where does everyone fall on the ornithischian cheek 'debate' if you could call it that?

In other words, do you think ornithischian dinosaurs had no cheeks, skin flaps, or muscular mammal-like cheeks (as they are usually depicted with)?
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Envy
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Would you look at me? I'm setting records.

Do you guys think that Irritator, Icthyovenator, and Oxalaia could have also walked on four legs like Spinosaurus? Or would we see in the case of Irritator or Suchomimus, (who were the precursors of Oxalaia and Spinosaurus) be in a transition between being a theropod and being a quadruped?

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If Irritator & Suchomimus aren't indeed the ancestors of Spinosaurus & Oxalaia, pardon my ignorance. :P
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CyborgIguana
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From what I've been able to tell, Spinosaurus was simply the oddball of its family and doesn't represent typical anatomy for spinosaurids (most of which had more ordinary theropod proportions).

Also, Suchomimus was more closely related to Baryonyx than Spinosaurus IIRC, so I don't think it was an ancestor.

I suppose Oxalaia could've been a quadruped, assuming it's even a separate genus from Spinosaurus.

Edited by CyborgIguana, Feb 18 2015, 12:44 AM.
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Paleosaurus
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I'm still pretty sure there weren't any quadrupedal theropods. Spinosaurus must've had some insane forelimb revision to be one, so I think its way more likely it was either a belly dragger or biped of some form. I think most paleontologists who have voiced their opinion seem to agree. Even if the legs were as short as the new reconstructions show, it probably wasn't knuckle walking.
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Acinonyx Jubatus
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CyborgIguana
Feb 18 2015, 12:18 AM
Even the ones that are basically just birds with teeth?

Well I guess they could still be cool looking, just not as "different" to us as most dinos. :P
That's when you put on your speculation cap and give them something awesome, like a bald vulture head or some outlandish feather display structure.
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Envy
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Would you look at me? I'm setting records.

CyborgIguana
Feb 18 2015, 12:43 AM
From what I've been able to tell, Spinosaurus was simply the oddball of its family and doesn't represent typical anatomy for spinosaurids (most of which had more ordinary theropod proportions).

Also, Suchomimus was more closely related to Baryonyx than Spinosaurus IIRC, so I don't think it was an ancestor.

I suppose Oxalaia could've been a quadruped, assuming it's even a separate genus from Spinosaurus.

I was reading further into this and I found out that Suchomimus and Oxalaia, for example, had different teeth structures. The ones that classify under Spinosauridae and Baryonychinae are the two main branches.
Suchomimus, Baryonyx, and Icthyovenator classify under Baryonychinae, which does mean Suchomimus couldn't have been a direct ancestor to Spinosaurus.

So, I'm pretty sure we still haven't found its ancestor, but there was also another spinosaurid found in Africa called Cristatusaurus. Which is seen as being a possible second species of Baryonyx; if not synonymous with Suchomimus. We have no specifics on how its teeth structure looked, but can only speculate from its jaw fragments.

Heh, for the longest time I thought Suchomimus was indeed Spino's ancestor. :S
Edited by Envy, Feb 18 2015, 03:05 AM.
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Paleop
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Paleopterix

I have a lot of biome questions :D

what are the biomes of:
0.stegosaurus
1.brachiosaurus
2.Apatosaurus
3.parasauroloaphus
4.nothronychus. g
5.pachyrinosaurus
6.alamosaurus
7.yutyrannus
8.Quetzalcoatlus
9.allosaurus
10.nanuqsaurus

thanks for the answers

...also is it possible to create a biome reference topic?

Edit:i meant zt2 biomes xD , but good point
Edited by Paleop, Feb 18 2015, 08:48 PM.
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CyborgIguana
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Well the Morrison is usually interpreted as a seasonal floodplain environment IIRC, so there's your answer for the first 3.
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