Oliver Perry Hay

Oliver Perry Hay pursued zoology and vertebrate palaeontology, organizing knowledge of fossil reptiles and mammals through detailed comparative research. After teaching science and working in museum zoology, he became a research associate of the Carnegie Institution and studied collections at the United States National Museum. Descriptions Of Two Extinct Mammals Of The Order Xenarthra From The Pleistocene Of Texas records fossil forms from a group that includes sloths and armadillo relatives. The Recognition of Pleistocene Faunas addresses the difficult task of identifying and comparing animal communities from that geological epoch. Anthropological Scraps. No. 1-5 stands apart in title and form, gathering numbered pieces issued between 1919 and 1921. Across these works, Hay’s method depended on description, comparison, and careful attention to where specimens were found. His larger studies, including The Pleistocene of North America, assembled evidence across many localities. Together, these three works show both his specialist focus on particular fossils and his wider effort to clarify the chronology and composition of North American prehistoric life.