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Extinct Animal Questions
Topic Started: Nov 26 2013, 10:24 PM (193,489 Views)
Jules
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Mihi est imperare orbi universo

Bacteria are direct ancestors of all the birds :)

But seriously, I think the answer is no. Not sure though.
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Even
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Agreeing on CyborgIguana to RaptorrexRampage's question... Their evolutionary relationship is more like distant uncle to distant nephew (i.e. anomalocaridids are stem-arthropods)

Adding to Crook's response on Tyrannachu's question... There had yet to be a solid ancestor of Aves... The line gets blurrier the more we got to the root of it xD
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hananas59
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Evolving creatures from earth.

Why had Brachiosaurus brachei his nostrils so far on the upper of his head ???
Edited by hananas59, Jan 8 2014, 12:36 PM.
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CyborgIguana
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Because it didn't. The fenestrae in its crest are no longer believed to be nostrils, which were probably located in a more normal spot.
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hananas59
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Evolving creatures from earth.

what were it then ???
Like such a thing that louds a noise ???
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CyborgIguana
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Probably something like that. :)
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CyborgIguana
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Why must I post so much? Anyway, I was just wondering if it would be possible for pterosaurs to hang upside down from trees or cliffs bat-style. I know this notion is generally frowned upon by mainstream pterosaur workers, but after comparing the feet of bats and pterosaurs: they look very similar to me.
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Admiral General Aladeen
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Hmm... I dont really know CI. :P

I know postosuchus might have been bipedal. Could a postosuchus use its tail to tripod to a full height on its hind legs? How tall would a postosuchus be if it did this?
Edited by Admiral General Aladeen, Jan 20 2014, 12:06 PM.
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CyborgIguana
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Possibly. I'm guessing that would make it around 5 to 6 feet tall.
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DinoBear
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Has the debate about the American lion's classification come to a conclusion yet? If so, is it Panthera atrox or Panthera leo atrox?
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CyborgIguana
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I think the jury's still out, though I'm leaning towards P. atrox myself (both it and the cave lion are pretty different in anatomy from present-day African lions). Anyway, is it possible that the discovery of the soft-tissue head crest on Edmontosaurus points towards this being a common feature among non-avian dinosaurs? After all, such wattles and skin flaps are a widespread feature among birds today, I see no reason to think that the same couldn't be true of dinosaurs. *Imagines tyrannosaurids with chicken-style wattles and combs*.
Edited by CyborgIguana, Jan 29 2014, 10:16 PM.
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Furka
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well maybe not in Tyrannosaurs or other large-prey hunters, afterall most birds with such ornamentation are usually vegetarian or omnivores.
but TBH I like the idea so much, that I've already drawn lots of dinos with wattles and such, I think it will be the next revolution in paleoart after "fluff on everything".
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CyborgIguana
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Recently, I read a Deviantart comment that questioned if the quill knobs on the arms of Velociraptor actually supported feathers, suggesting that they could've been the anchoring points for muscles instead. While I think this is almost certainly not the case, is there anyone here who can enlighten me on this argument (while I'm generally against clinging to particular ideas about paleontology, I must admit that I really don't want to go back to scaly maniraptorans)?
Edited by CyborgIguana, Feb 4 2014, 05:56 PM.
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Similis
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The author of the comment mixed up Velociraptor with Concavenator. Kind of ruins their credibility. Concavenator's BUMPS are currently interpreted as some sorts of musche anchors. Velociraptor's GROOVES correspond with wing-feather attachment points of living maniraptorans.
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CyborgIguana
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Ah, thanks for clearing it up. Also, if there was a concrete possibility of the knobs being muscle anchors, then I think paleontologists (and by that I mean legitimate dinosaur paleontologists) would've at least considered it by now.
Edited by CyborgIguana, Feb 4 2014, 09:18 PM.
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