Mosasaurus Jaw Small 320×193 Medium 640×387 Large 1024×619 Download Tiff Original 2400×1450 | (713.7 KB) Description The jaw bones of the Mosasaurus, a great snake-like reptile of the Cretaceous Period. Keywords Cretaceous fossils, dinosaur bones, Mesozoic fossils, Mosasaurs, Mosasaurus jaw bones Galleries Dinosaurs Source: Dana, James D. New Text-Book of Geology (New York: Ivison, Blakeman & Company, 1883) 318
