COMING SOON | BikiniDON Sticker

Dimetrodon Matte Sticker

Vinyl / Matte
3.3" x 3.3"

Dimetrodon is a type of “non-mammalian synapsid”. Today, synapsids include all mammals, as well as all animals closely related to mammals, including Dimetrodon. The term synapsid refers to an opening behind each eye. Dinosaurs are diapsids, referring to 2 openings behind each eye. Mammals such as humans, however, have an evolutionarily modified fenestral opening- we don’t have an opening anymore, just a concave portion of bone on the sides of our skull. That shows us where the opening was in our distant ancestors. Ultimately, Dimetrodon is more closely related to mammals, and us, than any other group- but it’s NOT a dinosaur!