nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqkcfmdfqjeusegekp7k0aqvcj2l0v8kj6qpvy5jxrsdmyef9m3rfqgdsypg "Fast" ~ 20 milion years. Why? Sulfides got oxidized by increasing oxygen levels, paired with barium, and precipitated as barite. What? The ocean became less toxic to things we recognize...