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heterodontosaur and Kayenta questons



Sorry to keep asking these questions, but does anyone have a ref for a recent (not so recent is okay too) describing any heterodontosaur? One with a description, illustration or photo of the femur head would be the best.
Also, does anyone have a ref for the depositional environment of the Kayenta formation?
Thanks very much once again, in advance.
Peace,
Rob


Student of Geology
Northern Arizona University
P.O. Box 20840
Flagstaff, Az. 86011
AIM: TarryAGoat
"A _Coelophysis_ with feathers?"

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