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- Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 silicon–oxygen tetrahedra
Size (the biggest): 42
Brongniart
Matrix dimensions: 210 x 142 x 44 mm
07799 - Wide 4.09 Inch Eocrinoid (Ascocystites) Plate - Lower Ordovician Prognathodon anceps - Quartz is a mineralAscocystites sp, Barrande 1887 Eocrinoidea Ascocystitida Parent taxon: Ascocystitida according to J. J. Sepkoski 2002 Sister taxa: Cambrocrinus, Eocystites, Eustypocystis, Nolichuckia, Pareocrinus Ecology: stationary intermediate level epifaunal suspension feeder Environments: coastal, transition zone lower shoreface Age range: 460. 9 to 457. 5 Ma Distribution: Ordovician of the Czech Republic, Morocco. Ascocystites sp: Fossilworks (Paleobiology
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