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Re: Rhamphorhynchus wrist articulation
Nick Pharris wrote:
Quoting "James R. Cunningham" <firstname.lastname@example.org>:
As the elbow is extended, the entire wrist swings aft and down
relative to the
r/u. As the wrist itself is flexed, it swings forward and down (sort
of like a
cocked-pin joint). The wrist itself does not rotate about the long
axis of the
r/u. However, metacarpal IV can rotate about 20 degrees about its
on a mortise and tenon articulation between it and the distal carpal.
Just out of curiosity, is this all specific to *Rhamphorhynchus*, or
does it apply to pterosaurs generally, based on, say *Quetzalcoatlus*?
Well, it applies to /Anhanguera/ as well. I don't know about
John Conway - palaeontographer