Glen Canyon Lecture Series Presents
“Lythronax Argestes ” by Dr. Alan Titus
Thursday February 27th 7:00 p.m. (Mountain Standard Time) at Carl Hayden Visitor Center at Glen Canyon Dam.
Meet Grand Staircase-Escalante’s newest dinosaur! This newly named animal, Lythronax argestes (Lie-throw-nacks ar-jest-eez), is a tyrannosaur of the same family as T-rex, just 12 million-years older. In fact it is so much older than T-rex that it’s the oldest known true tyrannosaur ever named. In keeping with spirit of its descendant’s name, Lythronax’s name means “southern king of gore.” While it is no surprise that T-rex’s great great great great great grand-daddy (or grand-mama, we’re not sure!) would be found someday, what is shocking is how similar these two animals are to each other. Lythronax is actually more closely related to T-rex than any other tyrannosaur found in the intervening 12 million years that separates them, meaning that the evolution of T-rex-like animals has not only been pushed back much farther in time than previously thought, but also that true T-rex-like animals with massive heads and stereoscopic vision must have lived only in the southern U.S. until just before they went extinct.
Grand Staircase Escalante National Monument Paleontologist Dr. Alan Titus will give a personal introduction to Lythronax. Copies of the new book “At the Top of the Grand Staircase: The Late Cretaceous of Southern Utah,” will be available.