New studies reveal that some species of primitive frogs - especially the ones in a family called Leiopelmatidae - are good jumpers but are amazingly klutzy at touching down.    From Wordnik.com.  [U.S. News] Reference

However, no studies had analyzed the jumping behavior of the most primitive living frogs, part of a group dubbed Leiopelmatidae that possess ancient features such as more vertebrae.    From Wordnik.com.  [Livescience.com] Reference

Amphibians are represented in New Zealand by just four primitive frog species of the endemic family Leiopelmatidae.    From Wordnik.com.  [Biological diversity in New Zealand] Reference

This primitive member of the Leiopelmatidae family does not have a tadpole stage and is one of the world's rarest frogs.    From Wordnik.com.  [Richmond temperate forests] Reference

Leiopelmatidae, which still sport an ancient physiology, to two more modern frog species.    From Wordnik.com.  [Scientific American] Reference

Leiopelmatidae.    From Wordnik.com.  [CreationWiki - Recent changes [en]]