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

Atractosteus spatula (specimens 07-11)

Alligator gar scales (A. spatula) from the Pleistocene epoch

Glyptotherium arizonae (specimen 34)

A glypotdon scute (G. arizonae) from the late Pleistocene epoch

Dasypus bellus (specimens 29-33)

Flex scutes belonging to a beautiful armadillo (D. bellus) from the Pleistocene epoch

Desmatosuchus sp. (specimen 18)

Desmatosuchus horn fragment (Desmatosuchus sp.) from the late Triassic period

Alligator mississippiensis (specimen 02)

Dermal scute from an American alligator (A. mississippiensis) from the Quaternary period

Testudines sp. (specimen 01)

Turtle scute fragment (Testudines sp.) from the Miocene epoch