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Re: Claws on deinonychosaurs




On animals such as Utahraptor, there is the possibility that the slashing
claw would have penetrated deeply enough to have left marks on its prey's
cervical ribs.  Keratin is softer than bone, but not by much.  And fresh
bone is softer than dehydrated bone.

Has anyone conducted any experiments?  Regarding the relative hardness
issue, can a foot claw from an extant bird (e.g., hawk) leave a mark on a
fresh cow bone?  If so, can slash marks from deinonychosaur claws be
distinguished from cut marks made by teeth?

<pb>
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