Dimetrodon SOLD 0.72" Neural Spine Fragment allosaurus This specimen is a fragment

This specimen is a fragment of a leaded glass shield window installed in the T Plant (221-T) Plutonium Recovery Building

This specimen is a fragment of the black

Each one is absolutely unique and beautiful

who brought the flame to light the Olympic Cauldron at the opening ceremonies on August 13

but some adventures are a little too exciting for some people

Dimetrodon SOLD 0.72" Neural Spine Fragment allosaurus This specimen is a fragmentRare 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. 72" fossil fragment of the Dimetrodon's iconic spine. The purpose of the spine sail