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grobkörnige Varietät des Siliziumdioxidminerals Quarz
after the bent sutures) are an extinct order of late Paleozoic ammonites (Ammonoidea)
Der Panzer besteht typischerweise aus zahlreichen knöchernen Platten
Description: This exceptional fossil preserves a remarkable aggregation of crinoid crowns attributed to Seirocrinus subangularis
Herkunft: Madagaskar
Versteinerte Holz-Kugel | Indonesien Holz grobkörnige Varietät des Siliziumdioxidminerals QuarzOrigin: Indonesia Age: Miocene, 20 million years Size: D21cm Description: 20 million year old petrified wood sphere, cut and polished to highlight the beautiful growth rings and the internal color combination of beige and black tones. Additional Information: Petrified wood consists of fossilized wood where all the organic materials have been replaced by minerals while retaining the structure of the wood. The fossilization process takes place
