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Re: Baryonyx Claw
>Horny keratinous sheaths for large dromeosaur claws are >available as casts,
and they too have been sculpted to show a >ridged, heavily textured surface.
The problem is that textured >surfaces on predator claws would be difficult
to keep clean. >Blood and other tissues would get caked on, and would grow
>bacteria, and attract flies.
You can, in fact, see a photograph of a very good restoration of a smooth
keratinous sheath on a Baryonyx claw on p. 170 of Louie Psihoyos HUNTING
Caitlin R. Kiernan