Dr. Tyler Lyson is a vertebrate paleontologist who studies the extinction of the dinosaurs, the rise of placental mammals, and the evolutionary origin of various reptiles, particularly turtles. He combines developmental, genetic, and fossil data with high-resolution chronostratigraphic data to address his research questions. Tyler has conducted fieldwork throughout the American West and has active field sites in North Dakota, Montana, and Colorado. Tyler was born in North Dakota and has been doing paleontology fieldwork since he was in middle school. Tyler received his BA from Swarthmore College and his PhD from Yale University. Tyler joined the Museum in 2014 after a postdoctoral position at the Smithsonian Institution.