<p>
	His research areas are paleontology, biogeography, and the history of geological and evolutionary thought. More specifically, his past and present research includes studies of rock-boring marine invertebrates in the intertidal zone of the Gulf of California in Sonora, Mexico,&nbsp;Neogene fossil fishes from western North America; anatomy and systematics of salmonid fishes, analysis of fish remains from archaeological sites in New Mexico and west Michigan, and assisting in developing a computerized database of Pleistocene mammalian fossil sites for North America. One of his most exciting and unique experiences was directing the excavation of a full Mastodon skeleton at Ada Bible Church in Cascade, Michigan.</p>
