0.4" Dimetrodon Sail Spine Bone Fossil Permian Age Waurika Oklahoma COA, Display Gastropod Gryposaurus did not have an

Gryposaurus did not have an elaborate hollow crest

These early animals were distinguished by their hardened exoskeleton

Experts suggest that these dinosaurs likely traveled in large herds

and energetic properties makes Chabazite a truly versatile and cherished crystal

0.4" Dimetrodon Sail Spine Bone Fossil Permian Age Waurika Oklahoma COA, Display Gastropod Gryposaurus did not have anLocation: 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.