Mammals
Bats, and a recently discovered extinct mouse-sized creature, are the only land mammals known to have inhabited New Zealand until the arrival of humans. Fossil marine mammals have been found. New Zealand now has two surviving species of endemic bat.
- Greater Short-tailed Bat, Mystacina robusta (1965) (Still billed as Critically Endangered by IUCN)
- Waipatia maerewhenua (Dolphin, Oligocene age, about 23–34 million years ago)
- SB mammal, thought to be neither therian nor australosphenidan
Read more about this topic: List Of Extinct Animals Of New Zealand