Snake origins.
Lee
M S
MS
Scanlon
J D
JD
Caldwell
M W
MW
D000818:Animals; D005075:Biological Evolution; D005580:Fossils; D006614:Hindlimb / Q000033:anatomy & histology; D008116:Lizards / Q000033:anatomy & histology; D010802:Phylogeny; D012911:Snakes / Q000033:anatomy & histology / Q000145:classification