This book presents perspectives on the past and present state of the understanding of snake origins. It reviews and critiques data and ideas from paleontology and neontology (herpetology), as well as ideas from morphological and molecular phylogenetics. "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