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Re: the transverse ligamental groove
Nick Longrich wrote-
> I don't know that anybody really knows for sure what Archaeopteryx'
>sternum looked like- there are disagreements about Wellnhofer's
>reconstruction. It seems unlikely that Archaeopteryx would have such a
>small sternum compared to dromaeosaurs and oviraptorids.
Although it would seem unlikely, it's obviously true that Archaeopteryx
lithographica lacks an ossified sternum and is probable that A. bavarica had
a small sternum if the other species lacks one. What's the problem with A.
bavarica's sternum? Is it so poorly preserved that it can't be determined
whether or not it is a sternum, is whole, etc.?