Mesosaurus, Permian Freshwater Reptile Protoceratops left lower jaw with no

left lower jaw with no teeth and an impression of the maxilla as found in the matrix

Back parts of the roof of the mouth and the inside of the lower jaw held dense batteries of peg-like teeth

Its remarkably large eyes gave it excellent vision

These animals had large

Mesosaurus, Permian Freshwater Reptile Protoceratops left lower jaw with noBeautiful plaque preserving a unique water dwelling early reptile form. Known from only South America and Africa, this distribution of Mesosaurus supports the understanding that these great continents were once joined together; Mesosaurus could easily swim rivers from one continent to another but salty oceans would have thwarted the freshwater creature from crossing an existing ocean. Mesosaurus sp. Early Permian (280 m. y. a.) Irati Formation Sao