Precambrian
It is debatable whether these are cnidarians, algae or stromatolites. The chemical signature of the clearly recognizable bumps indicates that this is the work of cyanobacteria. They are assigned to the Ediacara fauna of Eastern Europe.Age: Proterozoic, Tschernji-Kamen-Formation;Locality: Bernashivka, Vinnytsia Oblast, UkraineSize: approx. 17 x 15 x 3 cmThe pictures are examples. You will receive a piece of comparable quality.
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It is debatable whether these are cnidarians, algae or stromatolites. The chemical signature of the clearly recognizable bumps indicates that this is the work of cyanobacteria. They are assigned to the Ediacara fauna of Eastern Europe.Age: Proterozoic, Tschernji-Kamen-Formation;Locality: Bernashivka, Vinnytsia Oblast, UkraineSize: approx. 6 x 8-10 cmThe pictures are examples. You will receive a piece of comparable quality.Colors on photos may differ slightly from those of the original specimen for technical reasons.
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A very rare collectible!Resembling a sea anemone in appearance, Hiemalora is a fossil from the Ediacaran biota with a diameter of about 3 cm. The genus features a sac-like body with faint, radiating lines that were originally interpreted as tentacles. The discovery of a fern-like structure that appears to have grown attached to some Hiemalora specimens has lent more weight to a competing interpretation: This is the anchoring structure of a larger organism.Age: Proterozoic, Vendian, Ediacaran; Belomorian Stage, Yorga Formation, Kimberella Layers Locality: Solza River, Arkhangelsk Oblast, White Sea, northwestern RussiaSize: 13 x 11 x 2.5 cm The Ediacaran Hills give their name to the Ediacaran, a geological period of the late Precambrian that took place approximately 635 to 542 million years ago. They contain one of the oldest known fossil deposits of multicellular organisms with preserved soft tissues.Colors on product fotos may differ from those of the original specimen due to technical limitations.
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A true rarity!Karakhtia nessovi is a species of Proarticulate in the family Vendiidae that reaches a length of up to 100 mm (0.39 inches) and, like other representatives of this family, features a head-shield-like structure. Unlike all other Proarticulates, it has a rim with radial folds, giving it a ruffled appearance. It first appeared during the Ediacaran Period about 555 million years ago. K. nessovi is the only species in the genus Karakhtia. Haootia has been loosely compared to Karakhtia since haootia fossils superficially resemble the crinkled margins of Karakhtia. Karakhtia's holotype was found in the Ustʹ Pinega Formation near the White Sea in northwestern Russia and described in 2004.The genus name Karakhtia refers to the Karakhta River in the Arkhangelsk Oblast, near which the fossil material was found. The species name nessovi derives fromLeningrad paleontologist L. A. Nessov.Age: Proterozoic, Vendian, Ediacaran; Belomorian Stage, Yorga Formation, Kimberella Beds Locality: Solza River, Arkhangelsk Oblast, White Sea, RussiaSize: 9 x 8 x 3.5 cm Due to technical limitations, the colors displayed on your screen may differ from those of the original specimen.
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Historical slide with shell carapaces of female Cyprionotus ostracods.Age: Recent; Locality: Baleal, Ferrel, district of Peniche, PortugalDue to technical reasons, colors on photos may differ slightly from those of the original specimen. Our images are for reference only. When you make a purchase, you will receive a copy of equivalent quality.
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A slab that has been very well polished on both sides,the characteristic texture is clearly visible!You will receive a copy with a precise label; the photographs show various versions.Period: Precambrian, BIF Formation;Location: Pilbara, Western Australia, AustraliaSize: approx. 9 cm x 4 cm x 0.5 cmBanded iron formations (BIFs; also known as banded ironstone formations) are distinctive sedimentary rock units consisting of alternating layers of iron oxides and low-iron chert. They can reach a thickness of up to several hundred meters and extend laterally over several hundred kilometers. Almost all of these formations date from the Precambrian era and, according to one theory, are believed to document the oxygenation of Earth’s oceans. Some of Earth’s oldest rock formations, which formed about 3,700 million years (Ma) ago, are associated with banded iron formations.It is believed that banded iron formations formed in seawater as a result of oxygen production by photosynthetic cyanobacteria. The oxygen combined with dissolved iron in the Earth’s oceans to form insoluble iron oxides, which precipitated and formed a thin layer on the seafloor. Each band resembles a varve and is the result of cyclical fluctuations in oxygen production.Colors on product photos may differ from those of the original specimen due to technical reasons. Our pictures are for reference only. You will receive a specimen of equivalent quality with your purchase.
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