The Tristagmacene Epoch: 50-150 Million Years

The Tristagmacene was a period of ecological refinement and expansion, as life on Atmos diversified into increasingly specialized forms. The oceans grew to be teeming with complex ecosystems, from towering benthic forests to vast floating autotrophs. Sessile feeders, agile predators, and elusive scavengers all carved out their niches, driving an arms race of adaptation.