A member of the forum asked if I cam put a topic together to help identify claws from the Hell Creek/Lance formation.   Its fraught with difficulty since so little has been published and described from these faunas but will attempt to put something together.  All subject to discussion and mistakes.        Although the focus there is with the dinosaurs of the Upper Maastrichtian its applicable to most of the other faunas of the Campanian and Lower Maastrichtian ages.     Ceratopsia