From the album: Hell Creek / Lance Formations
Ceratopsidae (shed/"spit" teeth)
Hell Creek Fm., Powder River Co., MT, USA
Labeled as "Ceratopsidae" because there are two valid genera currently known from Hell Creek: Triceratops and Torosaurus - whose teeth are indistinguishable. You commonly see teeth like these sold as "Triceratops" spitters, but this is not necessarily a correct identification.