Paul O. (Paul Orman) McGrew

Paul O. McGrew, also listed as Paul Orman McGrew, was an American paleontologist whose work focused on vertebrate fossils. Records from Archives West describe him as a vertebrate paleontologist who joined the University of Wyoming faculty in 1946 and taught both stratigraphy and vertebrate paleontology, while Wikidata also links him with the Field Museum of Natural History.

His published work ranges from technical studies of fossil mammals to more accessible writing about geology and fossil sites. A widely available example is The Geologic History of Fossil Butte National Monument and Fossil Basin, written with Michael Casilliano for the National Park Service, which introduced readers to one of Wyoming’s most famous fossil landscapes.

Some catalog and library sources disagree on his life dates, so it is safest to identify him simply as an active 20th-century paleontologist rather than state exact years with confidence. What is clear is that he left a substantial scientific record in paleontology and helped connect museum research, university teaching, and public understanding of Earth history.