Dimetrodon 0.86" Neural Spine Fragment availablesoon The rapid change in pressure

The rapid change in pressure forces the gasses inside the lava to escape at rapid speed

100" fossil bone section from an Iguanodon from the Weald Clay deposits on the Isle of Wight

This type of growth is called an osteoderm

The Gem Medley collection is a variety of our gemstone specimens

Dimetrodon 0.86" Neural Spine Fragment availablesoon The rapid change in pressureRare 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. 86" fossil fragment of the Dimetrodon's iconic spine. The purpose of the spine sail