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Re: AW: FW: Paravian claw studies

In a message dated 5/30/12 4:36:57 PM, koreke77@yahoo.de writes:

<< First, it must be demonstrated that the curvature of the sheath follows 
the curvature of the ungual closely enough to make measurements of the 
latter in absence of the former actually worthwhile. >>

This is correct. It is not possible to accurately determine the curvature 
of the actual keratin claw from the bone core despite what some past 
have claimed. But that's OK, there are plenty of small short armed & 
nonarboreal theropod and modern ground raptors to see how their toe claws 
to birds 
predatory and otherwise that spend lots of time in trees.