AW Crompton's 60 years of research into the origins of mammals have focused on the evolution of the head. He turned for many years to extant animals in order to understand the complex functions of chewing, swallowing, suckling and other aspects of oral transport. More recently he has returned his focus to early mammalian evolution, as scanning and reconstruction technologies reveal more of the interior morphology of ancient, nascient mammals. His recent studies of the mammalian nose, braincase sidewall, and pharynx, bring into sharper focus the origins of mammalian endothermy, as well as challenge accepted taxonomic schemes. Here are some presentations Dr. Crompton has given at meetings conferences over the past several years.