Permian Extinction: Civilization

Sapient, or intelligent, life evolves shortly (some 90,000 years) before the Permian Extinction, which wipes out 95% of all life on Earth, like that extinction does in OTL (it is the biggest extinction ever to strike Earth). Civilization arises 11,000 years before the extinction, starting near the mountains in the middle of the Pangaean supercontinent. By the time of the extinction, airplanes ply the Tethys Ocean from and to the lands surrounding it and the larger Panthalassic Ocean is being explored, and there is a high level of technology. Then the Siberian Traps eruptions begin anew, releasing great clouds of methane (thus triggering the extinction)... how will the people react?

Permian extinction in OTL World map of the time period, approximately - well, some 4 million years before, maybe, but it'll have to do Another period world map

One artist's conception of Permian scenery Another artist's idea The OTL Permian period according to Wikipedia Animals that might have evolved into ATL "people" or been used for food or as beasts-of-burden

Seafood included (possibly) mollusks, brachiopods, ammonites, trilobites, cephalopods, and various other critters.