Dimetrodon Spine Sail Fragments protomammal In any case

In any case

at an exclusive discount

this creature was a hornless member of the rhino family

when atoms are drawn to the edge of a structure

This specimen is a fossil bone fragment of the Apatosaurus

Dimetrodon Spine Sail Fragments protomammal In any caseWith a fearsome jaw and reptilian appearance, Dimetrodon is often mistaken for a dinosaur. However, this family of Early Permian Period species falls into a disparate taxonomic clade known as synapsids which includes mammals. This specimen is a fossil fragment of the Dimetrodon's iconic spine. The purpose of the spine sail is unknown, though speculation ranges from thermoregulation and locomotion.