Late Cretaceous to Recent | image = Snapping_turtle_2_md.jpg | image_caption = Common Snapping Turtle | regnum = Animalia | phylum = Chordata | classis = Reptilia | ordo = Testudines | subordo = Cryptodira | familia = Chelydridae | subdivision_ranks = Genera | subdivision = See below. }} There're two extant species of the family Chelydridae: Chelydra serpentina, the Common Snapping Turtle, and its larger relative Macrochelys temminckii, the Alligator Snapping Turtle (although the monotypic Asia… (More on Chelydridae)