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| Extinct Animal Questions | |
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| Topic Started: Nov 26 2013, 10:24 PM (193,300 Views) | |
| CyborgIguana | Apr 13 2016, 03:23 PM Post #2911 |
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Oxygen isotopes confirm that Arctodus was an obligate carnivore IIRC. |
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| babehunter1324 | Apr 13 2016, 04:14 PM Post #2912 |
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Even if it was, it clearly wasn't mainly an osteophagus: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0077531 As far as I know the oxygen isotope of Artodus was compared to macroherbivores (horses, camels, ground sloths, bison, mammoths...) and carnivores (dire wolf, Smilodon, American lion) but not to other ursids, also they were from samples taken in the Northern region of it's distribution (Yukon and Alaska) and considering they are from one of the coldest periods of the Würm/Wisconsin glaciar event it is quite possible that the diet of the species varied throught it's distribution and temporal range. Edited by babehunter1324, Apr 14 2016, 04:00 AM.
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| BossMan, Jake | Apr 13 2016, 04:26 PM Post #2913 |
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Son of God
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@Furka From what I'm seeing it looks very much like a Velociraptorinae |
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| CyborgIguana | Apr 13 2016, 04:44 PM Post #2914 |
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And you know this HOW from an animal that's known from nothing but jaw fragments? Wikipedia doesn't say anything more specific than that it's a coelurosaur, and probably a maniraptoran. Edited by CyborgIguana, Apr 13 2016, 04:45 PM.
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| Ztlabraptor211 | Apr 13 2016, 05:47 PM Post #2915 |
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I think he's referring to the reconstructions. If so I agree that a lot of reconstructions I find after looking it up, most reconstructions look similar. If he is gong off of fossils then I agree there is far too little to go off of |
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| BossMan, Jake | Apr 13 2016, 06:14 PM Post #2916 |
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Son of God
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Yeah a quick google search showed an animal with a very velociraptor like skull. Now from the known Fragments I cant say anything for certain |
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| stargatedalek | Apr 13 2016, 09:45 PM Post #2917 |
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I'm not slow! That's just my moe!
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Richardoestesia really does run home just how many fragmentary species we really have. I seem to recall a half dozen or so groupings of teeth initially attributed to it becoming Dromaeosaur sp. and Coelurosaur sp. a few years back. I have a question regarding neck musculature. In Hadrosaurs, Ankylosaurs, and Nodosaurids, would they have been capable of forming their necks into an "s curve"? I see many conflicting reconstructions in regards to all three groups. |
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| Incinerox | Apr 14 2016, 06:09 AM Post #2918 |
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Āeksiot Zaldrīzoti
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For all ankylosaurs, they could not. Between the neck vertebrae and the variable armour plating that'd have gotten in the way, it's fairly unlikely that their necks could bend in anything more than a single arc in whatever direction. As for hadrosaurs, it's a bit trickier. Skeletally, yes, they could to some degree. But once you throw in muscle, internal organs, skin, fat, whatever, it won't look like an S. |
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| PrimevalBrony | Apr 14 2016, 06:15 AM Post #2919 |
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Youtuber. Combat robotics fan
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So I saw a post that was reporting finds from Morocco and the article shows bones from a carnosaur that was ~15m long. What kind of carnosaur could it be? Link to the article: http://jurapark.pl/jurapark-na-tropie-nowych-dinozaurow-z-maroka/ |
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| Acinonyx Jubatus | Apr 14 2016, 12:14 PM Post #2920 |
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I AM THE UNSHRINKWRAPPER!
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From Morocco? Chances are good it's a Carcharodontosaurus at that size. Unless they're misusing the word "Carnosaur"- then it could be from a Spinosaurus. I'm sure a dedicated Palaeontologist would be able to tell which from the photos in your link. |
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| BossMan, Jake | Apr 14 2016, 12:49 PM Post #2921 |
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Son of God
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I got just a bit excited thinking it was new finds from Bahariasaurus |
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| Ztlabraptor211 | Apr 14 2016, 12:52 PM Post #2922 |
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Could it be sauroniops?
Edited by Ztlabraptor211, Apr 14 2016, 12:53 PM.
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| Acinonyx Jubatus | Apr 14 2016, 01:00 PM Post #2923 |
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I AM THE UNSHRINKWRAPPER!
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What was the environment of the Echkar formation like? Was it more or less like the Kem Kem? |
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| BossMan, Jake | Apr 14 2016, 02:15 PM Post #2924 |
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Son of God
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Not looking like much of a difference seems like it was the typical mix of swamp/wetlands on open barren areas |
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| Incinerox | Apr 14 2016, 02:18 PM Post #2925 |
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Āeksiot Zaldrīzoti
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They're comparing it with Aerosteon which is in the middle of a taxonomic shift because, you know, megaraptora. So it's likely it's still interpreting Aerosteon as a carnosaur, at which point it was estimated at 9m. They're scaling it up without considering overall bulkiness. I find 15m to be a highly unreliable number for such a fragmented specimen. Especially when you consider that the vertebrae of the new carnosaur are just proportionally so much taller compared to their length than that of Aerosteon. Screams 12m carcharodontosaurid to me, but I'll have to look into it more some other time. |
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