1) Genus chelydra 2) Reptile genus 3) Snapping turtles 
Chelydra is one of the two extant genera of the snapping turtle family, Chelydridae, the other being Macrochelys, the much larger alligator snapping turtle. The snapping turtles are native to the Americas, with Chelydra having three species, one each in North America, Central America, and South America. The genus Chelydra has three species: ...
[n] - snapping turtles
genus Chelydra noun snapping turtles