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Extinct Animal Questions
Topic Started: Nov 26 2013, 10:24 PM (193,287 Views)
TheNotFakeDK
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And to quote Scott in the comments, "Probably an obligate quadruped".

I think the supposed Australian Leptoceratops is referring to Serendipaceratops, which from what I can tell was deemed a neoceratopsian after Dale Russell said the ulna (the only known bone) looked like that of Leptoceratops. And if I recall correctly, they never compared it with anything else, only Leptoceratops. A more recent study concluded the ulna can't be assigned to anything beyond Genasauria, although it was apparently closest to that of 'Minmi' (probably the Kunbarrasaurus specimen).
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Ulquiorra
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Do we know what the gills of these were like? Gill slits, like shark gills, as so often depicted, or chimaera-like opercular flaps?
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Furka
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Could Ornithomimids use their arms for practical purpose other than "fancy mting dances" ? Like digging in substrates or pull foliage closer ?
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stargatedalek
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I'm not slow! That's just my moe!

Furka
May 25 2016, 05:49 PM
Could Ornithomimids use their arms for practical purpose other than "fancy mting dances" ? Like digging in substrates or pull foliage closer ?
Most of them probably not, Deinocheirus, yes.
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TheNotFakeDK
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I'm not so sure on that, the fingers of ornithomimids are all roughly the same length, and the claws are relatively long, straight and flat-bottomed, so it sounds like they're doing something different with those hands, what ever that may be.
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Incinerox
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Āeksiot Zaldrīzoti

Grasping twigs, I bet.
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heliosphoros
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Ulquiorra
May 25 2016, 05:44 PM
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Do we know what the gills of these were like? Gill slits, like shark gills, as so often depicted, or chimaera-like opercular flaps?


We don't know. Personally, I prefer opercular gills, since they are the ancestral condition in vertebrates and, unlike sharks, chimeras haven't lost them

TheNotFakeDK
May 25 2016, 08:42 PM
I'm not so sure on that, the fingers of ornithomimids are all roughly the same length, and the claws are relatively long, straight and flat-bottomed, so it sounds like they're doing something different with those hands, what ever that may be.


Long before they were discovered to be winged, ornithomimids were already noted as having hands similar to those of birds, implying a primary role in feather support.
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Paleop
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Paleopterix

well it does not necessarily pertain exclusively to dinosaurs....how are their names derived?
If I wanted to name something "light branch" or what not, how would I convert greek letters to english letters?
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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

Paleop
May 30 2016, 12:42 PM
well it does not necessarily pertain exclusively to dinosaurs....how are their names derived?
If I wanted to name something "light branch" or what not, how would I convert greek letters to english letters?
Find out how the Greek words are pronounced, and make your best guess. Or you could find other scientific names with the same root words and figure it out from there.
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Paleop
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Paleopterix

thank you :)

what are the differences between tarbosaurus and tyrannosaurus that would qualify them as separate genre?
I know that tarbo has a much thinner snout and overall is narrower and lighter
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babehunter1324
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Tarbosaurus is considerably older stratigraphically and from a different continent (though that didn't prevent the synonymization of Charonosaurus with Parasaurolophus), Tarbosaurus also has some skeletal differences in the built of it's jaws, teeth and had even smaller forelimbs than T. rex.
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BossAggron
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Formerly Dilophoraptor

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Tarbosaurus bataar Skull vs. Tyrannosaurus rex Skull
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BossMan, Jake
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Son of God

Which groups of non-sauropod dinosaurs could've have lived the longest, and how long?
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Furka
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I myself would probably look at Ankylosaurs, being slow animals with a not so active lifestyle they could have probably lasted for quite some time. But this is just a wild guess with nothing to back it up, so I might be totally wrong.
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Incinerox
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Honestly, I'd not be surprised if that were true.
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