Multiple causes including global cooling, polar glaciation, falling sea levels, and the Popigai impactor Ĭhicxulub impactor the volcanism which resulted in the formation of the Deccan Traps may have contributed. Milankovitch cycles may have also contributed Possible causes include a supernova or the Eltanin impact Ĭlimate change due to change of ocean circulation patterns. ![]() Unknown may include climate changes, massive volcanic eruptions and Humans (largely by human overhunting) ( source and image info) Period or supereon The labels of the traditional "Big Five" extinction events and the more recently recognised Capitanian mass extinction event are clickable links see Extinction event for more details. It does not represent all marine species, just those that are readily fossilized. The blue graph shows the apparent percentage (not the absolute number) of marine animal genera becoming extinct during any given time interval.
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