Comment by mastax

Looking at that map, it's wild how many "confirmed impact structures more than 100km wide" there are just in Australia. There must be dozens of mass extinction events that we don't know about because the fossil record is so unclear past 500Mya.

[0]: https://en.wikipedia.org/wiki/Extinction_event

[1]: https://en.wikipedia.org/wiki/Chicxulub_crater

[2]: https://en.wikipedia.org/wiki/Earth#Natural_history