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What happened in the Cambrian Period?

By |2018-04-21T11:56:36+00:00June 23rd, 2017|Geology|

Mossy rocks At the beginning of the Cambrian Period, about 542 million years ago, there were sea creatures like hydras, jellyfish, sponges and seaweed living in the oceans, but only one-celled algae on land yet. Small arthropods like beetles were beginning to appear, and by 540 million years ago the first land plants [...]