All Together Now: DIMETRODON IS NOT A DINOSAUR

Like pterosaurs, ichthyosaurs and plesiosaurs, Dimetrodon, while commonly mistaken for a dinosaur, isn't actually a dinosaur. In fact, unlike pterosaurs, ichthyosaurs and plesiosaurs, Dimetrodon isn't even a reptile, but instead belongs to a diverse group of animals that includes all modern day mammals. Seriously. » 5/22/14 10:30pm 5/22/14 10:30pm