0.4" Dimetrodon Sail Spine Bone Fossil Permian Age Waurika Oklahoma COA, Display Otodus Tooth straight trunk and a graceful

straight trunk and a graceful pyramidal crown

and climate-driven extinction events

Discover the extraordinary story locked within this Tatahouine diogenite

They hold the distinction of being the first vertebrates to master powered flight

generating organic deposits that would eventually become coal seams

0.4" Dimetrodon Sail Spine Bone Fossil Permian Age Waurika Oklahoma COA, Display Otodus Tooth straight trunk and a gracefulLocation: Ryan Formation, Waurika, Oklahoma Weight: 0. 3 Ounces Gem Jar Dimensions: 32MM Spine Dimensions: 0. 4 Inches Long, 0. 2 Inches Wide, 0. 1 Inches Thick Comes with a free Gem Jar display. Comes with a Certificate of Authenticity. The item pictured is the one you will receive. Dimetrodon belongs to a group called the synapsids, which includes all living mammals and a menagerie of extinct animals extending back to about 305 million years ago.