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RE: Bitten Ornithopod on This Side Of Hell?
Tim Donovan wrote-
Not only are they present in the Lance they are relatively more abundant
there than in the Hell Creek.
Yes, this is something I was not aware. I had thought that Edmontosaurus
was limited to one locale in Canada and that Anatotitan was only from Hell
Creek. Perhaps I should have referred to Chapman & Brett-Surman 1990, which
states that Anatotitan is from the Hell Creek Formation and the holotype
came from Moreau River in South Dakota. I was under the impression that the
Hell Creek Formation was on the other side of Montana. I apologize to the
list for this blunder and thank HP Varner, HP Ford, and HP Donovan for
correcting this mistake.
I assumed a hadrosaur because you mentioned evidence of tyrannosaurid
attack, and Thescelosaurus was too small to be preferred prey of a
tyrannosaur, and maybe too fast. Moreover if an attack occurred it is hard
to imagine a tyrannosaur failing to kill a thescelosaur.
But I didn't specify that it was Thescelosaurus either. I don't know what
species it is or even what type of ornithopod it is. The specimen in
question is not yet published and probably should not be discussed further.
I see no reason why a tyrannosaurid could fail to kill a thescelosaur. Prey
items do escape their predators at times, even if they are injured.