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Hi @jim-barkley. Could you add Phanerozoic Eon, Mesozoic Era, Cretaceous Period, Late Cretaceous Epoch to this specimen? And do you know the nearest town to where this was collected? Thanks!

Mack, Colorado, is the nearest town, but it is probably 25 or 30 miles away.

This is another example where we could use slightly more precise location data before marking as research grade. Either GPS coordinates or something like “25 miles north-northwest (I’m just making up the direction here) of Mack, CO” in the field notes should suffice. Thanks!