Nullarbor dwarf bettong

The Nullarbor brush kangaroo ( Bettongia pusilla ) is an extinct marsupial of the genus of the brush kangaroos ( Bettongia ). It has been known only by subfossiles bone material, which was funded in Western Australia and in the Koonalda Cave in the Nullarbor Plain in South Australia for days. The lower jaw is made ​​easier and the teeth smaller than the recent brush kangaroo species. The molar teeth are straight sided and less bulbous with higher crowns. The nature of the bone suggests that this species is extinct during the early colonial settlement by Europeans.

When the Aborigines in the Pilbara region in Western Australia, there are the words wirlpa and weelba. They refer to a very small kangaroo, the description does not match any species which has been observed alive in the last 200 years. Presumably, it could act in this animal to the Nullarbor brush kangaroo