Triceratops horridus, horn on base Quetzalcoatlus increasing the surface area of

increasing the surface area of the jaws in order to catch small prey

Conchoraptor gracilis juvenile in matrix

compared the arm to that of a sloth

This is the largest Ammonite cast available on the web

Triceratops horridus, horn on base Quetzalcoatlus increasing the surface area ofTriceratops horridus Brow horn This horn is 28 inches long and 23 inches in circumference near the base. It is from the Cretaceous age Lance Formation of Wyoming. Just look at all of the blood grooves on this fantastic horn. Like antlers and horns on modern day mammals, Triceratops horns were probably used more for show (and thus mate selection) than for defense. But if you would rather forget we said that and instead reminisce on the more romantic T.