The honey possum or noolbenger (Tarsipes rostratus),
The honey possum's niche is thought to have become available around forty million years ago, when its preferred food plants diversified. Their visual acuity is suited for detecting the bright yellow inflorescence of flowers such as Banksia attenuata.
Tarsipes rostratus is a keystone species in the ecology of the coastal sands of Southwest Australia, which house complex assemblages of plants known as kwongan.
Their feeding activity involves visits to many individual plants; their head often carries a small pollen load that can be conveyed more effectively than the birds that visit the same flowers. The favoured species Banksia attenuata appears to be obliged to this animal as a pollination vector, and both species have evolved to suit their mutualistic interactions.