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Dimetrodon Spine Sail Fragments

Dimetrodon Spine Sail Fragments

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 fossil fragment of the Dimetrodon's iconic spine. The purpose of the spine sail is unknown, though speculation ranges from thermoregulation and locomotion.

 

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