The oldest evidence of bioturbation on Earth
Tuesday, March 20, 2012 - 10:02
in Earth & Climate
The Ediacaran Period, an interval in Earth's history after the Snowball Earth glaciations but before the Cambrian radiations, marks the introduction of complex macroscopic organisms synchronously in unrelated groups. It has been proposed that the increase in size in marine organisms was triggered by the oxygenation of Ediacaran oceans.