Earth history; Precambrian

Precambrian life
In 1947, impressions in sandstone of fossil multicellular organisms were found at Ediacara in southern Australia. They were up to 50 centimetres long. Several looked like jellyfish, others looked like sea feathers and some looked like worms and arthropods. Similar fossils have later been found in rocks which are between 590 and 550 million years old, in all parts of the world. The fossils are only impressions of soft organisms with a thick outer "skin". Some may have lain freely on the bottom, while others were partly buried. Mouth and anus are missing, and they probably lived in symbiosis with algae which supplied their nourishment. List of contents in the Earth history; Precambrian showcase


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