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Extinct Animal Questions
Topic Started: Nov 26 2013, 10:24 PM (193,269 Views)
heliosphoros
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Yes, as I said pterosaur snouts, aside from anuronathids, are usually naked.

Liaoning pterodactyloids are probably the most well known examples.
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CyborgIguana
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What would be most sensible for Dimorphodon and similar early pterosaurs? IMO they seem sort of halfway between an anurognathid-like snout and a more standard beaky one (probably not a perfect description but I assume you can see what I'm getting at).
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Incinerox
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Āeksiot Zaldrīzoti

Bare snouts.
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CyborgIguana
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That's pretty much what I assumed judging from the majority of reconstructions, I just thought I'd ask anyway.
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stargatedalek
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I'm not slow! That's just my moe!

Mind you, bare =/= "soft" let alone scaled. They were probably covered in hardened skin like crocodiles.
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YixianIsLoveYixianIsLife
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Could it be possible that Scansoriopteryx, Dendrorhynchoides and Microraptor actually did live in the time of the Yixian formation along with Beipiaosaurus, Incisivosaurus, Shenzhousaurus, Yutyrannus, Zhenyuanlong, Sinosauropteryx, Sinocalliopteryx, Psittacosaurus, Liaoningosaurus, Confuciusornis, Jeholornis, Repenomamus all along?
Edited by YixianIsLoveYixianIsLife, Sep 4 2016, 11:03 PM.
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CyborgIguana
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Relating to the previous discussion on pterosaur facial tissue, is it possible that istiodactylids could've had "lips" seeing as they were likely less aquatic in habits than most other toothed pterodactyloids IIRC?
Edited by CyborgIguana, Sep 4 2016, 10:34 PM.
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stargatedalek
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I'm not slow! That's just my moe!

CyborgIguana
Sep 4 2016, 10:33 PM
Relating to the previous discussion on pterosaur facial tissue, is it possible that istiodactylids could've had "lips" seeing as they were likely less aquatic in habits than most other toothed pterodactyloids IIRC?
More likely the jawline was coated in hardened "beak-like" skin (think crocodiles or plecostamus) as in most pterosaurs and dinosaurs (for the record scaled lips are a solely lizard/snake phenomenon), although it still would have sealed closed when the mouth shut.
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CyborgIguana
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Yeah, by "lips" I just meant anything that would've covered the teeth when the mouth was shut (hence the quotation marks). Probably should've clarified.
Edited by CyborgIguana, Sep 4 2016, 11:51 PM.
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heliosphoros
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Probably had lips, yes. The occlusion patterns would indicate that.
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YixianIsLoveYixianIsLife
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YixianIsLoveYixianIsLife
Sep 3 2016, 09:17 PM
Could it be possible that Scansoriopteryx, Dendrorhynchoides and Microraptor actually did live in the time of the Yixian formation along with Beipiaosaurus, Incisivosaurus, Shenzhousaurus, Yutyrannus, Zhenyuanlong, Sinosauropteryx, Sinocalliopteryx, Psittacosaurus, Liaoningosaurus, Confuciusornis, Jeholornis, Repenomamus all along?
Can Someone please answer this question?
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Incinerox
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Āeksiot Zaldrīzoti

Microraptor maybe. Known Microraptor specimens are younger than Yixian's biota, but there's still the possibility of an overlap (the Jiufotang Formation came immediately after the Yixian Formation, so a species transition must have occurred at some point).

Dendrorhynchoides and Scansoriopteryx are far too old. We're talking Middle-Late Jurassic here.

Now, my first question, because yes, even I ask questions:

I'm still a little conflicted on what type of feathers therizinosaurids are supposed to have. Like, I'm aware that Beipiaosaurus is supposed to have long filaments with some thicker quills in parts, but were they branched or unbranched feathers? More critically, what about their wings? Were their wings fully formed as is true to the maniraptoran norm, simplified rows of filaments, or simply not there at all? Does this data even exist beyond Beipiaosaurus?

And my other question:













...











... I'm bored. What non-avian dinosaur should I draw? :P
Edited by Incinerox, Sep 5 2016, 11:53 AM.
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stargatedalek
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I'm not slow! That's just my moe!

Incinerox
Sep 5 2016, 11:48 AM
Now, my first question, because yes, even I ask questions:

I'm still a little conflicted on what type of feathers therizinosaurids are supposed to have. Like, I'm aware that Beipiaosaurus is supposed to have long filaments with some thicker quills in parts, but were they branched or unbranched feathers? More critically, what about their wings? Were their wings fully formed as is true to the maniraptoran norm, simplified rows of filaments, or simply not there at all? Does this data even exist beyond Beipiaosaurus?
Therizinosaur feathers are something of a mystery. On one hand we know their ancestors possessed complex pennaceous feathers and wings, but on the other Beipiaosaurus has seemingly very primitive feathers preserved (with no arm material at all, sorry). So it's really a matter of whether you want to assume therizinosaurs lost their complex feathers in favor of simpler, "emu-like" feathers, or whether the feathers preserved on Beipiaosaurus are deteriorated. Both are equally possible.
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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

Incinerox
Sep 5 2016, 11:48 AM
... I'm bored. What non-avian dinosaur should I draw? :P
Why don't you draw William Buckland's original interpretation of a Megalosaurus? That'd be cool.

Or a Chialingosaurus. Whichever.
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BossMan, Jake
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Son of God

Would it be wrong to say that Edmontonia and Denversaurus represent a direct evolution? Like Edmontonia evolved into Denversaurus?
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