Algues bleu vert - Affichage sans matrice - Stromatolites

Description
Algues bleu vert - Affichage sans matrice - Stromatolites
2.5 Billion Years - Maroc

STROMATOLITES were the "Breath of Life" on earth, producing oxygen, nitrogen, and carbon.

Stromatolites provide some of the most ancient records of life on Earth.

Stromatolites were much more abundant on the planet in Precambrian times. One genus of stromatolite very common in the geologic record is Collenia.

Stromatolites are a major constituent of the fossil record for about the first 3.5 billion years of life on earth, peaking about 1.25 billion years ago. They subsequently declined in abundance and diversity, which, by the start of the Cambrian, had fallen to 20% of their peak.

The most widely-supported explanation is that Stromatolite builders fell victims to grazing creatures.

Size: 12 cm x 6.5 cm

Informations du lot
Spécimen
Algues bleu vert
Objet
Affichage sans matrice
Nom scientifique
Stromatolites
Origine
Maroc
Période géologique
2.5 Billion Years
État
Bon état
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