Schismatic Era
This era began as the direct result of Caer's Mistake. It was characterized by a massive increase in biodiversity in the terrestrial ecosystem as well as many new anthropoids. Though some of this occurred due to the changing distribution of land vs ocean, it was mostly a direct result of the mutagenic effect of the magic involved in Caer's Mistake. There was a consensus that this era began in 0 PY, and it was commonly accepted that it ended in -602 PY.