This document contains photos of various prehistoric aquatic reptiles from the Paleozoic and Mesozoic eras. Images are included of Proterosuchus, Rutiodon, Sarcosuchus, Deinosuchus, Purussaurus, Tanystropehus, Placodus, Mesosaurus, Henodus, Archelon, Nothosaurus, and Cymbospondylus. The text is in Catalan and provides the name of each reptile in both Latin and Catalan.