A black fossil dinosaur vertebra with a pronounced neural spine is displayed in the rock next to a 10 centimeter scale bar.

Happy #FossilFriday! Today it is something common from the #Cretaceous of #Idaho; a tail bone (caudal vertebra) from our state #dinosaur, #Oryctodromeus! It was collected under permit from the #CaribouTarghee #NationalForest, and comes from a site that has produced lots of different animals!