Dimetrodon limbatus (specimen 01)

Juvenile dimetrodon claw (D. limbatus) from the early Permian period

Cidaroida sp. (specimen 03)

Primitive urchin spine (Cidaroida sp.) from the Eocene epoch

Echinoidea sp. (specimen 01)

Urchin spine (Echinoidea sp.) from the Miocene epoch

Myliobatoidei sp. (specimen 94)

Stingray tail barb (Myliobatoidei sp.) from the present day

Onchopristis numidus (specimens 90-93)

Giant sawfish rostral barbs (O. numidus) from the Late Cretaceous period

Canis latrans (specimen 44)

Coyote claw (C. latrans) from the present day

Ursus deningeri (specimens 40-42)

Associated Deninger’s bear (cave bear) phalanges and claw core (U. deningeri) from the Pleistocene epoch

Dasypus bellus (specimen 21)

Beautiful armadillo claw core (D. bellus) from the late Pleistocene epoch

Oviraptor philoceratops (specimen 43)

Replica Oviraptor claw (O. philoceratops) based on a claw from the late Cretaceous period

Reptilia sp. (specimen 36)

Claw of an unknown species of reptile (Reptilia sp.) from the early Cretaceous period