1) Amphibian genus 2) Genus scaphiopus 3) New world spadefoot toads 
Scaphiopus is a genus of North American amphibian commonly referred to as the Southern Spadefoot Toads. They differ greatly from true toads (those of the family Bufonidae) by having eyes with vertical pupils, no parotoid gland, and relatively smooth skin. Their most distinctive feature is a spade-like projection on their hind feet, from which thei...
(from the article `Anura`) Most tadpoles complete their development in two or three months, but there are notable exceptions. Tadpoles of spadefoot toads, genus Scaphiopus, ...
[n] - New World spadefoot toads
genus Scaphiopus noun New World spadefoot toads