Species: 4 – Archey’s frog (Leiopelma archeyi), Hamilton’s frog (Leiopelma hamiltoni), Hochstetter’s frog, (Leiopelma hochstetteri) , and Maud Island frog (Leiopelma pakeka)
Genera: 1 – Leiopelma
Leiopelmatidae is one of the most primitive frog families. They have an extra vertebrae making them have 9 in total, only frogs of the family Ascaphidae (Tailed Frogs) also have 9. Leiopelmatidae is endemic to New Zealand. The eggs of the frogs are direct developing so they skip the tadpole phase. The frogs do not make any mating calls nor any sounds unless they are provoked.