Helen Ryan

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Artist’s reconstruction of the new Western Australian fossil koala species. Nellie Pease

May 5, 2026

Kenny Travouillon, Western Australian Museum; Curtin University; Helen Ryan, Western Australian Museum; Kailah Thorn, Western Australian Museum, and Natalie Warburton, Murdoch University

An extinct koala species has been discovered in Western Australia. Climate change 28,000 years ago erased its habitat.

Some of the Mammoth Cave megafauna. Peter Schouten from Archer et al., 2023.

October 22, 2025

Mike Archer, UNSW ; Blake Dickson, UNSW ; Helen Ryan, Western Australian Museum; Julien Louys, Griffith University, and Kenny Travouillon, Western Australian Museum

Australia doesn’t have any ‘kill sites’. In fact, there’s no hard evidence people hunted the megafauna.