Mesosaurus braziliensis, framed Spinosaurus flexible neck

flexible neck

Eryops (pronounced EAR-ee-ops) (meaning "long eye" or "drawn-out eye" in Greek) was a common

The most abundant marine organisms in the Mazon Creek biota are jellyfish

Recent research that examined the microscopic bone structure of the tall neural spines in edaphosaurids has raised doubts about a thermoregulatory role for the sail and suggests that a display function is more plausible

have been found with numerous gastroliths in their stomachs

Mesosaurus braziliensis, framed Spinosaurus flexible neckBeautiful 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