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pterosaur tracks from SVP

this page is a fairly large download for those of you with small
connections, so be warned.  
The resolution is not as nice as I had hoped (but then the lighting was
not the best)


and for those of you who really want to get excited...the online GIFs of
the reconstructed pterosaur (Anhanguera) walk:

Dave Unwin and Don Henderson said that they tried 3 different body
positions-1 bipedal and 2 quadrepedal with different body orientations,
and that this was the only locomotion that came out with the animal
stable (balanced) out of all of them AND that matched the available
tracks AND that matched the possible articulations of the bones.

-Betty Cunningham
Flying Goat Graphics
(Society of Vertebrate Paleontology member)