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Post by Theropod on Oct 5, 2013 16:26:32 GMT
Just thought I would add a sticky thread so people can share their own Hypothesises about dinosaurs. You can still create a thread if you think you would want to feature your theory.
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Post by thesporerex on Oct 5, 2013 20:02:00 GMT
Who here thinks Epanterias is a freakisly big Allosaurus? I do.
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Post by Theropod on Oct 5, 2013 20:32:56 GMT
You have a good theory. I think Epanterias had a good chance of being just one larger individual, but I also do believe it was a different specimen.
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Post by es1001 on Oct 5, 2013 22:37:21 GMT
Well, I dont know about that theory. For example, 1 in ten million humans grows to be a giant, so it wouldnt be much different for any other animal either. Being an extremely large member of your species is rare. So, what are the odds of finding a giant Allosaurus that early? Especially since it outgrows all Allosaurus specimens by over 2m. Unless we hit the jackpot, Im sticking with Epanterias. In the future, I can see there being another species of Allosaurus being named from the Epanterias remains.
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Post by thesporerex on Oct 5, 2013 23:17:49 GMT
That is true but we don't know what percentage of humans grow to be giants, also because humans have alterd our bodies it becomes harder to become a giant because the original average homosapian was less than 5 feet and now some none giant humans can grow to more than 6 feet tall. Also Epanterias and allosaurus are exactly the same body design. I also doubt that is correct for 1 in 10 million estimate. Epanterias is exactly the same animal design but its just 2.3 metres longer than the largest allosaurus. My bet its a giant allosaurus.
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Post by es1001 on Oct 6, 2013 0:00:12 GMT
Extremely possible. It probably is true. But I just cant believe that we could hit the jackpot that fast. We have not discovered any other type of super sized dinosaur, unless we have some synonyms yet to be discovered. Im going to call it "Biiig Al" for now, but I still think another species of Allosaurus should be named for a specimen that large.
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Post by thesporerex on Oct 6, 2013 0:21:31 GMT
Its very ironic that we call one of the Allosaurus specimens big al yet it is one of the smallest Allosaurus's found being 7.5-8 metres long.
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Post by Theropod on Oct 6, 2013 0:25:48 GMT
Its very ironic that we call one of the Allosaurus specimens big al yet it is one of the smallest Allosaurus's found being 7.5-8 metres long. FINALLY!!! I WAS WAITING FOREVER FOR SOMEONE TO SPOT THAT FACT!!!!
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Post by Deleted on Oct 13, 2013 17:44:03 GMT
Regardless Epanterias is one monster of an allosaurus and a carnivorous theropod,in general it was definitely a foe to be reckoned with during its time...
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Post by thesporerex on Nov 7, 2013 21:25:04 GMT
I edited the thread saying hypothesis instead of theory. Because its the correct term.
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Post by themechabaryonyx789 on Nov 7, 2013 22:22:31 GMT
I believe that Suchomimus is a larger species of Baryonyx, called Baryonyx tenerensis.
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Post by raptorx863 on Nov 8, 2013 1:26:25 GMT
After reading the new paper on Lythronax, learning about all the new phylogenies suggesting T.rex, Tarbosaurus, and Zhuchengtyrannus all form a clade together, and hearing about the new dwarf polar tyrannosaurine from Alaska, I've come up with the idea that perhaps tyrannosaurid evolution and diversification was basically the reverse of what happened with canids a few million years ago.
This might sound weird, but hear me out. Canids first evolved in North America about 40 million years ago, where they stayed for most of their history. About 8 or 9 Ma however, the Beringia formed and allowed canids to spread into Asia, Europe, and Africa, where they started diversifying like mad into everything from the Dhole, to the African wild dog, and the iconic grey wolf. However, less than a million years ago, a few species of these Eurasian canids came back over Beringia during the last Ice Age and returned to the North American landscape, notably the ancestor of the Dire wolf, the coyote, as well as the Eurasian grey wolf. That is canid evolution over the past 9 million years in a nutshell.
Now, what about tyrannosaurs? Well, if current phylogenies are to be believed, tyrannosaurs seem to have originated from an Asian ancestor about over 90 Ma. Somehow, one species got over the Bering Strait and made it into Laramidia somewhere between 90-80 Ma (probably via some proto-Beringia), and then diversified into all the tyrannosaurids like Gorgosaurus, Albertosaurus, and Daspletosaurus, and as Lythronax shows, this diversification seems to have happened really quickly. About 75-70 Ma, however, an unknown species of tyrannosaurine related to Tyrannosaurus somehow made it back into Asia (probably via the same proto-Beringia method) and evolved into Tarbosaurus and Zhuchengtyrannus.
At least, that's the kind of dispersal we would expect from the current cladistic info. The first part about tyrannosaurid evolution is pretty much common knowledge by now, but as far as I know a form of late dispersal by tyrannosaurines back into Asia has never really been examined, even though it would probably be expected.
The best evidence for this, however, would be the discovery of a tyrannosaurine during Late Campanian or Early Maastrichtian around the Bering Strait. And guess what? The polar dwarf tyrannosaurine from Alaska I've been spouting about fits the bill perfectly. Moreover, the talk about him also suggested that the polar dwarf was a close relative of both T.rex and Tarbosaurus. Again, what we would expect to find.
So, tyrannosaurid evolution does parallel a reverse canid radiation rather well, at least during the last few million years of the Mesozoic. Anyone have anything to critique?
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Post by themechabaryonyx789 on Nov 24, 2013 13:39:02 GMT
Who here thinks Epanterias is a freakisly big Allosaurus? I do. I guess Atom king was right after all lol
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Post by Allosaurus Rex on Nov 24, 2013 14:04:26 GMT
i would actually consider epanterias to be its own species. its remains are found at the top layers of the morrison formation, as it is found in layers that are 4 million years younger than any allosaurus.
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Post by thesporerex on Nov 24, 2013 14:11:25 GMT
i would actually consider epanterias to be its own species. its remains are found at the top layers of the morrison formation, as it is found in layers that are 4 million years younger than any allosaurus. I would say this is the only convicing evidence for epanterias being its own specie.
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