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An unusually high amount of the metal is in the form of plessite
The Fezouata assemblage includes a considerable component of Cambrian holdovers alongside a surprising number of crown group taxa previously unknown to have evolved by the Early Ordovician
often calcite
Hammannopyge
07801 - Wide 6.13 Inch Eocrinoid (Ascocystites) Plate - Lower Ordovician Fish - Museum Grade An unusually high amount ofAscocystites 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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