Matean-Queenslandian Extinction
600 million years hence
As the sun's luminosity increases and the protective ozone layer of the Earth begins to disintegrate, surface temperatures got hotter and hotter through the second half of the Ultimozoic. This by itself would be hostile to life. Volcanic activity would not cease, however, for a few hundred million years more. A mantle plume would erupt to the surface in southern Euroboreas, belching out greenhouse gases that would trap heat and disturb the ozone layer even further, baking the Earth's surface.
This sudden incease in hothouse conditions would never completely decrease. All land life would be severely affected by this event. The very last vertebrates, mollusks, and crustaceans would go extinct as a result of this effect. Not even marine organisms could prosper through the event as a result of ocean acidification and UVB radiation hitting the surface of the sea. As the Phaneozoic Eon gives way to the Necrotic Eon, very few multicellular organisms would continue forward, and almost none on the Earth's surface.
| ← Zephyr, 595 myh | Necrotic Eon → |