Early Permian (295–270 Ma) sphenacodontid synapsids are of importance as they are the first large-bodied (up to 300 kg) apex predators in the evolutionary history of terrestrial amniotes 1. For 25 ...

Dimetrodon had a mouth full of novelty. Most conspicuous were several different tooth types in the sail-backed protomammal’s jaws – incisor-like teeth for gripping, stabbing canines, recurved rear ...

DALLAS — Dimetrodon chowed down on sharks and amphibians like a prehistoric Pac-Man. Rather than dining on plant eaters, the reptilian carnivore ate mainly aquatic animals, chomping big bites out of ...

As the meat it ate came in bigger and bigger packages, an ancient predator found a solution — it evolved serrated teeth similar to steak knives, a Canadian study has found. Dimetrodon was a ...

Take a close look and you might see a little bit of yourself. With its lizard-like appearance and that distinctive sail on it back, Dimetrodon is practically the mascot of the Palaeozoic Era, a time ...

DENVER — Talk about a creature feature: A bizarre boomerang-headed amphibian that burrowed in a seasonal pond in what is now Texas often met its doom in the jaws of a reptilian fin-backed mammalian ...

Paleontologists have long been fascinated by bizarre structures on prehistoric animals. The horns of Styracosaurus, the sail of Dimetrodon, the crest of Tupuxuara and more—these odd ornaments raise ...