Earth history; Precambrian

Click on a fossil Stromatolite Stromatolite Iron ore Stromatolite Spriggina sp. Tribrachidium sp. Dickinsonia sp. Glaessnerina sp. Medusinites sp. Mawsonites sp. Charnia sp.
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

Klikk på en tidsperiode Prekambrium Kambrium Ordovicium Silur Devon Karbon Perm Kvartær Trias Jura Kritt Tertiær
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Publisert 18. mai 2011 16:00 - Sist endret 13. mai 2019 14:27