Two trilobite fossils are shown in this entry. The first is an intact enrolled Flexicalymene sp. trilobite. It is probably Ordovician Peri...

UPDATE: Thanks to Lance Hall for a new identification of this fossil shark tooth.  It appears to be a Cretalamna instead of a Scapanorhynch...

A Hybodotid shark crusher teeth called Ptychodus whipplei . These crusher teeth were used eat shell fish. The fossil was found in the Uppe...