Dimetrodon SOLD 0.82" Neural Spine Fragment fossilplant While these formations do not

While these formations do not appear often in nature

Please note: As each trilobite is a unique fossilized creature

Giant Beaver Tooth

"Extraterrestrial cause for the Cretaceous-Tertiary extinction

and enter the age of civilization

Dimetrodon SOLD 0.82" Neural Spine Fragment fossilplant While these formations do notRare 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. 82" fossil fragment of the Dimetrodon's iconic spine. The purpose of the spine sail