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Re: Metatarsal fusion/nonfusion: birds/theropods



Darren Tanke writes:

>  3. All theropod dinosaurs have unfused metatarsals (except Elmisaurids
> which do fuse their metatarsals on the proximal end only and CERATOSAURUS,
> which does not count here as the type specimen is pathologic).


What about the abelisaurids?  I could be way off track here, but 
don't big'uns like _Carnotaurus_ and _Xenotarsosaurus_ show some 
degree of fusion of their lower hindlimb elements into a 
tibiotarsus and/or tarsometatarsus?