Thomas R. Holtz, Jr.

Thomas R. Holtz, Jr. is a vertebrate paleontologist and senior lecturer at the University of Maryland's Department of Geology. He has published extensively on the phylogeny, morphology, ecomorphology, and locomotion of terrestrial predators, especially on tyrannosaurids and other theropod dinosaurs. He is the author or co-author of "Saurischia", "Basal Tetanurae", and "Tyrannosauroidea" in the second edition of The Dinosauria, which is the mostly widely accepted field authority in dinosaurian paleontology. He has also consulted as a scientific advisor on the Walking With Dinosaurs BBC series

He is also the Director of the University of Maryland, College Park Scholars- Earth, Life, and Time Program.