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----- Original Message -----
Sent: Saturday, March 10, 2001 12:48
PM
Subject: bird arms
What is the correct position for the arms and
hands of animals such as Caudipteryx or Sinosauropteryx?
I don't know of any evidence against the
position shown on the dust cover of Padian & Currie's The Encyclopedia of
Dinosaurs.
If the radius and ulna of these animals could not
cross then surely the birdlike posture with the arms tucked back is not
possible.
No AFAIK, because
Which leads me to ask whether birds can cross
their radius and ulna to create rotational wing motion during flight, or to
fold them away.
birds can't cross their radii and ulnae at
all.
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