Now that I'm shut down for member the winter I'm going to try to catch up on my cataloging and ID work.
First up, is this an ischium? If so whos? Any help appreciated.
It and all the others I will be asking about are from the middle Petrified Forrest member of the Chinle formation...just below the Black Forrest member (it's almost completely erroded away and covered unconformably with the early Cretaceous Dakota Group Conglomerate) in undisturbed reddish brown mudstone with copious huge fossiliferous coprolites(?). Please let me know if I have forgotten any key info and thanks.