Perisphinctes

A fossil of Perisphinctes; an ammonite from the Jurassic period. [circa 150 million years old]

A fossil of Perisphinctes; an ammonite from the Jurassic period. [circa 150 million years old]

A fossil of Perisphinctes; an ammonite from the Jurassic period. [circa 150 million years old]