Dimetrodon 0.90" Neural Spine Fragment kritosaurus This plane was retired in

This plane was retired in 1990 and is currently on display in the Smithsonian's Air & Space collection at the Udvar-Hazy Center

Mikimoto’s fascination with pearls began at a young age

38" sample of Red Planet Obsidian set into a sterling silver bezel

The exposed tooth measures 0

the shells of ammonites had an inner layer known as the nacre or "mother of pearl"

Dimetrodon 0.90" Neural Spine Fragment kritosaurus This plane was retired inRare 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. 90" fossil fragment of the Dimetrodon's iconic spine. The purpose of the spine sail