The Hyperpelagene Epoch: 150-200 Million Years

As the Tristagmacene drew to a close, the oceans of Atmos were transformed by the relentless expansion of cyanophytes and other autotrophs. Their steady production of oxygen reshaped the chemistry of the seas, fueling new opportunities for life. Once dominated by smaller, sluggish organisms, the waters grew teeming with creatures growing ever larger and more active. Predators became swifter, prey more elusive, and complex ecosystems emerged across the ocean depths. This era-the Hyperpelagene-ushered in a time of boundless expansion, where the rising tide of oxygen breathed complexity into the seas. 

Explore the Hyperpelagene: