The Leiopelmatidae, or New Zealand primitive frogs, are a family belonging to the suborder Archaeobatrachia. Their relatively primitive form indicates they have an ancient lineage. While some taxonomists have suggested combining the North American frogs of the genus Ascaphus in the Ascaphidae family with the New Zealand frogs of the genus Leiopelm... Found on http://en.wikipedia.org/wiki/Leiopelmatidae
(from the article `Anura`) ...vertebrae; amplexus inguinal; larvae with single median spiracle and complex mouthparts or with direct development (froglet hatching directly from ... Found on http://www.britannica.com/eb/a-z/l/32