Dimetrodon SOLD 0.56" Neural Spine Fragment rockinaboxamethyst In Pleistocene North America

In Pleistocene North America

This specimen is a complete Mosasaur fossil tooth

-Anthelme Brillat-Savarin

Unique Preservation of Fossil Ghost Fish in Green River Formation

Dimetrodon SOLD 0.56" Neural Spine Fragment rockinaboxamethyst In Pleistocene North AmericaRare Permian Material! If all fossils are out of stock, sign up for email notifications as we do expect to get more over time. With a fearsome jaw and reptilian appearance, Dimetrodon is often mistaken for a dinosaur. However, this family of Early Permian Age species falls into a disparate taxonomic clade known as Synapsids which includes Mammals. This specimen is a 0. 56" fossil fragment of the Dimetrodon's iconic spine. The purpose of the spine sail