Fossils of extinct celaphopod Belemnitella mucronata

Fossils of extinct celaphopod Belemnitella mucronata, crustacean Glyphea ornata, tooth of the mackerel shark Otodus appendiculatus, tooth of shark Squalicorax pristodontus (Corax pristodontus), turtle Chelonia benstedi, and skull of aquatic lizard Mosasaurus hofmanni. Chromolithograph from Dr. Fr. Rolle's "Geology and Paleontology" section in Gotthilf Heinrich von Schubert's "Naturgeschichte," Schreiber, Munich, 1886. (Photo by: Florilegius/Universal Images Group via Getty Images)