Gregory Paul

The taxonomics of the lithe basal eutyrannosaur genera and species of late Maastrichtian western North America

In 1946 Gilmore observed that the Hell Creek Formation component of the larger TT-zone of the late Maastrichtian contained more tyrannosaur taxa than just titanic Tyrannosaurus rex, based on a small, ontogenetically mature skull with a higher tooth count than the tyrant lizard. O...