Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Six turtle skulls in lateral view illustrating cranial disparity within the group. (a) the snapping turtle (Chelydridae) Macrochelys temminckii; (b) the pig nosed turtle (Carettochelyidae) Carettochelys insculpta; (c) the baenid (Baenidae) Palatobaena cohen; (d) the chelid turtle (Chelidae) Chelus fimbriatus; (e) the soft-shelled turtle (Trionychidae) Trionyx triunguis and (f) the cow horn turtle (Meiolaniidae) Meiolania platyceps.
