1. Education
You can opt-out at any time. Please refer to our privacy policy for contact information.




Aublysodon (Getty Images)


Aublysodon (Greek for "backward-flowing tooth"); pronounced ow-blih-SO-don


Woodlands of North America

Historical Period:

Late Cretaceous (70-65 million years ago)

Size and Weight:

About 15 feet long and 500-1,000 pounds



Distinguishing Characteristics:

Medium size; tyrannosaur-like body


About Aublyosodon:

If Aublyosodon were being examined today, the diagnostic material representing this dinosaur (a single fossilized tooth) probably wouldn't be widely accepted by the paleontological community. However, this presumed tyrannosaur was discovered and named way back in 1868, when accepted practices were much less strict, by the famous paleontologist Joseph Leidy (best known for his association with Hadrosaurus). As you can guess, Aublysodon may or may not merit its own genus; most paleontologists think this was a species of an existing genus of tyrannosaur, or possibly a juvenile (considering that it only measured about 15 feet long from head to tail).

©2014 About.com. All rights reserved.