Stromatolite (approx. 2 - 3 cm)

Product number: F5584S

€3.50*

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Product information "Stromatolite (approx. 2 - 3 cm)"

Contrasting beautifully preserved fossil algae mats.

Age: Cambrian
Region of discovery: Mexico
Size: approx. 2 - 3 cm

Stromatolites belong to the oldest fossils we know of, as they are merely bacteria or algae that form mats which catch sediment. Any new layer to the mat seals the sediment and also collects a new layer of sediment. When the sediment finally fossilizes and the mats decompose, the layers are still visible. They need calm waters and low predation to grow, so they nowaday can only occur in extreme environments where grazer cannot eat them faster than they can grow, like the Shark Bay in Australia.

The picture is a sample. You will get a similar specimen.

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Stromatolite ( approx. 3 x 8 cm)

Contrasting beautifully preserved fossil algae mats.Age: CambrianRegion of discovery: MexicoSize: approx. 3-4 x 8-10 cmStromatolites belong to the oldest fossils we know of, as they are merely bacteria or algae that form mats which catch sediment. Any new layer to the mat seals the sediment and also collects a new layer of sediment. When the sediment finally fossilizes and the matts decompose, the layers are still visible. They need calm waters and little predation to grow, so they nowadays can only occur in extreme environments where grazers cannot eat them faster than they can grow, like the Shark Bay in Australia.The picture is a sample. You will get a similar specimen.

€9.50

Prices incl. VAT plus shipping costs

Stomatolite: Mary Ellen Jasper, large

High polished disk of cyanobacteria formed in very shallow seas.Hence the stratification: tidally rhythmic deposition of the sediments of cyanobacteria.Precambrian (2.2 billion years old)Place of discovery: Biwabik Formation, Mary Ellen Mine, Mesabi Range, St. Louis County, Minnesota, USA.Size: 7 x 13 cmColors shown in pictures may differ slightly from the original due to technical reasons.

€74.00

Prices incl. VAT plus shipping costs

Stromatolite: Pucalithus

Cut block of petrified microbial mats and algage that caught sediment. These only form in very rare conditions, especially in freshwater. The lammelar and columnar structures of the stromatolites are banded with an orange-black color scheme.Mainly grey and green, some red jasper.Age: Kreide, Maastrichtium, El Molino FormationLocality: Süd-Cochabamba, Oruro, BolivienSize: ca. 11 x 5,5 x 4 cmColors shown in pictures may differ slightly from the original due to technical reasons.

€95.00

Prices incl. VAT plus shipping costs

Stromatolite: Mary Ellen Jasper

Highly polished disk of rock with columns of cyanobacteria formed in very shallow seas.Hence the stratification: tidally rhythmic deposition of the sediments of cyanobacteria.Mainly grey and green, some red jasper.Age: Precambrian (2.2 - 1.88 billion years old)Locality: Biwabik Formation, Mary Ellen Mine, Mesabi Iron Range, St. Louis County, Minnesota, USASize: approx. 19 x 9.5 x 0.5 cm (7.5 x 3.8 x 0.2 in)Colors shown in pictures may differ slightly from the original due to technical reasons.

€199.00

Prices incl. VAT plus shipping costs

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