Editing Impact event (section)

====Paleozoic and Mesozoic====
Two {{convert|10|km||adj=mid| sized}} asteroids are now believed to have struck Australia between 360 and 300 million years ago at the [[West Warburton Basin|Western Warburton]] and [[East Warburton Basin]]s, creating a {{convert|400|km||adj=mid| impact zone}}. According to evidence found in 2015, it is the largest ever recorded.<ref>{{Cite web|url=https://www.australiangeographic.com.au/news/2015/03/worlds-largest-asteroid-impact-found-in-australia/|title=World's largest asteroid impact found in Australia|date=March 24, 2015|website=Australian Geographic}}</ref> A [[Diamantina River ring feature|third, possible impact]] was also identified in 2015 to the north, on the upper [[Diamantina River]], also believed to have been caused by an asteroid 10&nbsp;km across about 300 million years ago, but further studies are needed to establish that this crustal anomaly was indeed the result of an impact event.<ref>{{cite web|url=http://www.ga.gov.au/news-events/news/latest-news/potential-asteroid-impact-identified-in-western-queensland|title=Potential asteroid impact identified in western Queensland|publisher=Geoscience Australia|access-date=26 June 2016|date=2015-03-17}}</ref>

[[File:Chicxulub-animation.gif|thumb|An animation modelling the impact, and subsequent crater formation of the Chicxulub impact (University of Arizona, Space Imagery Center)]]
The prehistoric [[Chicxulub crater#Impact specifics|Chicxulub impact]], 66 million years ago, believed to be the cause of the Cretaceous–Paleogene extinction event, was caused by an asteroid estimated to be about {{convert|10|km|mi}} wide.<ref name="autogenerated76"/>