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Fantastiska naturliga fossiler - Fossiliserat djur - Crinoid - 19 cm - 13 cm
Nr 83696663
Nr 83696663
Stromatolite Strelley Pool
Oldest fossil on earth 3,5 billion years old - Pre-Cambrian
Genuine specimen, pink and grey layers, grade ‘A’
Australia
Dimensions: 3,3 x 2,2 x 0,5 cm
Stromatolites are layered bio-chemical accretionary structures formed in shallow water, by the trapping, binding and cementation of sedimentary grains by biofilms of micro-organisms.
The Strelley Pool Formation is dated to more than 3,5 billion years old and found in Australia.
This formation is within the Pilbara Supergroup and an extremely important site for scientists to study.
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