Michael Caldwell received his PhD from McGill University and held postdoctoral positions at George Washington University and the Field Museum of Natural History. He is Professor and Chair of the Department of Biological Sciences and jointly a member of the Department of Earth and Atmospheric Sciences at the University of Alberta. He was the founding President of the Canadian Society of Vertebrate Paleontology.
This deep dive into the evolution of the lineage we commonly refer to as snakes examines lines of evidence for how we understand the Mesozoic origins of a number of squamate reptile lineages. A central thesis is the reminder that snakes are not unique in lacking limbs, but instead the lineage of Lepidosaurs we refer to as snakes are characterized by derived and distinct sets of kinetic head morphologies. - R. Graham Reynolds, Biology, University of North Carolina