Fig. 6: Paleogeographic distribution of the fossil taxa in Late Paleozoic Pangea.
From: Permian hypercarnivore suggests dental complexity among early amniotes

The amniotes Mesenosaurus, Oromycter, Opisthodontosaurus, Captorhinus, Delorhynchus, Colobomycter, and the stem amniote Seymouria were collected at the Dolese quarry, Richards Spur, Oklahoma, USA (red dot); the varanopid Watongia was found in Blaine County, Oklahoma (blue dot); the sphenacodontid Dimetrodon was collected at Briar Creek Bonebed, while Edaphosaurus was found at Hog Creek, Arroyo Formation, Clear Fork Group, Texas (orange and brown dots); the haptodontine and Haptodus were found at the Garnett Quarry, Anderson County, Kansas (white dot); Ennatosaurus is from the Moroznitsa locality, Mezen, Russia (black dot). Map illustrated by The PLATES Project, Institute for Geophysics, University of Texas at Austin.