Scientists have confirmed that koalas once inhabiting Western Australia belonged to a distinct species, Phascolarctos sulcomaxilliaris, not the modern eastern koala. The reclassification follows ...

Scientists have identified a new extinct koala species, Phascolarctos sulcomaxilliaris, from Western Australia, hidden in fossil collections for over a century. Detailed skull and tooth analyses show ...

Scientists studying Western Australian koala fossils have found the modern koala was not the only koala species in the recent ...

In our new study, published today in Royal Society Open Science, we show these WA koalas were not simply stray populations of the modern koala. They represent a distinct species that has been hiding ...

A new analysis of fossilised koala skulls and bones has revealed an extinct species of koala lived in WA until a few thousand ...

Fossils reveal that there were at least two kinds of koala when humans first arrived in Australia, but one died out about ...

SYDNEY, Australia – Koalas are on track to become extinct in New South Wales before 2050, according to a report from the Australian state’s parliament. A committee released the report Tuesday after a ...