title: Perspectives: evolutionary biology. Limbless tetrapods and snakes with legs.
authors.affiliation: Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14850-2701, USA. hwg5@cornell.edu
authors.forename: H W
authors.initials: HW
authors.lastname: Greene
authors.forename: D
authors.initials: D
authors.lastname: Cundall
mesh_terms: D000818:Animals; D005075:Biological Evolution; D005580:Fossils; D006614:Hindlimb / Q000033:anatomy & histology; D008116:Lizards / Q000033:anatomy & histology / Q000145:classification; D010802:Phylogeny; D012886:Skull / Q000033:anatomy & histology; D012911:Snakes / Q000033:anatomy & histology / Q000145:classification; D009626:Terminology as Topic