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Re: Sharovipteryx an ornithodiran??

Quoting david peters <davidrpeters@earthlink.net>:

There are dinosaurs and there are crocodiliforms (Scleromochlus nests here) and together they comprise the sum total of the Archosauria (birds + crocs). Pterosaurs and Sharovipteryx are way off yonder in lizard land where the lateral digits are not reduced,

Um, lateral digits most certainly are reduced in pterosaurs. Manual digit V is *gone*, and pedal digit V is long (in basal forms), but composed of only 2 phalanges, implying reduction and secondary re-lengthening.

Nick Pharris
Department of Linguistics
University of Michigan