However, there are already other suggested candidates for giant impacts at the Permian–Triassic boundary, for example Bedout off the northern coast of Western Australia, although all are equally contentious, and it is currently under debate whether or not an impact played any role in this extinction.
The Bedout impact coincides with the Permian–Triassic extinction event, the period known at the end-Permian where 90% of Marine and 80% of land life disappeared.