The Cambrian Period: 540 Myth

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During the Cambrian period, no life existed on land. The Cambrian period occurred 490 to 540 Mya. In the Cambrian at this point, no life, yet existed on land all of life had been rare. Very early in the Cambrian period the sea floor was covered by a mat of bacteria . Above was a thick layer of oxygen-free mud. The first multicellular life forms had been in the late Proterozoic to look at the microbes. So at this point animals decreased since this time period.

The Cambrian period had this big explosion that leads to new organisms on the land. Beginning around 542 million years ago in the Cambrian Period, during this period most major animal phyla appeared, it was determined by the fossil record. This period lasted about 53 million

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