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| Extinct Animal Questions | |
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| Topic Started: Nov 26 2013, 10:24 PM (193,362 Views) | |
| Urufu | Aug 30 2015, 07:19 AM Post #1981 |
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>>here<< is a list of Dinosaurs from them we know the Colours. |
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| Jules | Aug 30 2015, 07:44 AM Post #1982 |
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Mihi est imperare orbi universo
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Said species is Jinfengopteryx elegans.
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| Paleop | Aug 30 2015, 10:44 PM Post #1983 |
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Paleopterix
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I hate to bother anyone, but does anyone know where I can find some good references for leaellynasaura (skeletal) and, I'm having a little trouble with finding good H. moorei proportion references. thanks
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| BossAggron | Aug 31 2015, 02:16 AM Post #1984 |
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Formerly Dilophoraptor
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![]() There's this one |
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| Mathius Tyra | Aug 31 2015, 03:24 AM Post #1985 |
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Rat snake is love... Rat snake is life
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About Troodonts' diet, there is Byronosaurus who has needle-liked teeth and is unlikely to be omnivorous. |
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| BossMan, Jake | Aug 31 2015, 09:40 AM Post #1986 |
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Son of God
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How come sauropods disappeared from North America by the mid Cretaceous? Speaking of sauropods apparently Apatosaurus is now in the top 5 for heaviest sauropods at 88 tons. Is this likely? I mean it's skeleton is big but it is also somewhat slender 88 tons seems like tremendous over kill. |
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| Jules | Aug 31 2015, 09:48 AM Post #1987 |
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Mihi est imperare orbi universo
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As far as I know, Sauropods (Alamosaurus) were still present in North America by the late Cretaceous. |
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| BossMan, Jake | Aug 31 2015, 10:02 AM Post #1988 |
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Son of God
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Sauroposeidon was the one of the last if not the last. From then on no sauropods lived in North America until Alamosaurus and its kin migrated up from South America |
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| Incinerox | Aug 31 2015, 03:13 PM Post #1989 |
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Āeksiot Zaldrīzoti
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You wanna tell us how they crossed an ocean? Coz I don't have a clue. |
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| Paleop | Aug 31 2015, 03:49 PM Post #1990 |
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Paleopterix
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sauropods are very gassy animals. maybe they floated? I've seen many depictions of beipiaosaurus with quills, is there evidence for quills? |
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| CyborgIguana | Aug 31 2015, 04:00 PM Post #1991 |
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We certainly have evidence of feathers in the fossils we have, but I'm unaware of any evidence for quills. |
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| BossMan, Jake | Aug 31 2015, 04:32 PM Post #1992 |
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Son of God
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OK will let me ask you something then, why is it that during the last phase of the mid Cretaceous (about 100 mya maybe 90) all the way to the very end we have no fossil evidence of any other sauropod until the very end when all of a sudden Alamosaurus pretty much just appears out of nowhere. Today it is still the only North American Titanosaur IIRC and considering that South America had a wider concentration of these sauropods and that it's much closer then say Africa or Asia it seems like that was the most likely place where it would've came from. |
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| babehunter1324 | Aug 31 2015, 05:00 PM Post #1993 |
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I think that probably has to do more with the fact that we had vierually no fossils in North America between 95 to 80 MYA with the exception of some fossils form the Zuni basin. Also, considering how fragmentary the fossil record is in Appalachia, some regions may have had for all we know a Sauropod dominated fauna that we just haven't discovered yet. Anyways, if I recall correctly some Alamosaurus fossils are from the late Campanian which makes even a migration from Appalachia unlikely. Also speaking of Appalachia: http://saurian.maxmediacorp.com/?p=631 How many unique genus and species of Dinosaurs, mammals, reptiles and plants are sitting on the basemants of the musuems of the Eastern Coast? That's just kinda annoying... even sad. Edited by babehunter1324, Aug 31 2015, 05:07 PM.
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Aug 31 2015, 05:02 PM Post #1994 |
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★
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So you're saying just because there isn't much evidence of their ancestors being in NA that they hopped an ocean? Because there's even less evidence of them doing that. |
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| CyborgIguana | Aug 31 2015, 05:05 PM Post #1995 |
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Also you misquoted the original post. I certainly was not the one to say that. |
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