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Ratings & reviews

5.05/4/2026

Creates dynamic and thought-provoking lessons.

4.06/27/2025

Creates a positive and motivating atmosphere.

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About David

David Varricchio is a Professor in the Department of Earth Sciences at Montana State University, where he specializes in Geoscience with research focused on paleobiology, taphonomy, and ichnology. He earned his B.S. from Cornell University in 1984, M.S. from the University of Georgia in 1989, and Ph.D. in Biology from Montana State University in 1995. Varricchio first came to Montana State University in 1989 as a graduate student studying dinosaurs under Jack Horner and joined the faculty in 2002. His field-based research explores the interface between biologic and geologic processes, particularly reproductive, burrowing, and herding behaviors in dinosaurs. Notable discoveries include the burrowing dinosaur Oryctodromeus cubicularis in 2007, evidence of air sacs in a new theropod species, and ancient iguana-like lizards, crocodyliforms, and turtles from Montana formations. He has led expeditions uncovering diverse dinosaur assemblages in Idaho and contributed to understanding dinosaur nesting and incubation, such as contact incubation of partially buried eggs demonstrated feasible in studies from 2020.