First results in Google told me that there were five mass extinctions on Earth: Ordovician-Silurian, Late Devonian, Permian, Triassic-Jurassic, Cretaceous-Tertiary.
Don't really care if that is a correct answer.
Thanks for the chance.

And Holocene extinction, which is going on now. Now I'm curious If the answer above me is correct.

All i know there was 5 extinctions on Earth since the begining: Odovician, Devonian, Permian, Triassic-jurassic, Cretaceous-tertiary

Thank you!!! :)

Thank you!

Thanks:)

Thanks !

Thanks!

Thank you!!!

Thanks for the giveaway :)

thanks alot

Thanks for the chance!

Seems fun, thank you! :)

Thanks for the chance Bro and i think anwser is Odovician, Devonian, Permian, Triassic-jurassic, Cretaceous-tertiary

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thanks!

Thanks!