Undescribed Archaeocyathid Mass mortalityArchaeocyatha, Vologdin, 1937L. Cambrian (Nevadella perfecta zone)Poleta fmNevada USAUndescribed Cambrian ArchaeocyathidSKU: TDI15630,00 €PriceOut of StockTechnical data:size: slab 13 cm x 9 cm archeocyathid 1,2 cm and 1 cm. NO composition restorations: NO RESTORATIONS preparator: Gianpaolo Di Silvestro ref. Wikipedia : Archaeocyatha (or archaeocyathids ancient cups" /ˈɑːrkioʊsaɪəθə/) is a taxon of extinct, sessile, reef-building[1] marine organisms of warm tropical and subtropical waters that lived during the early (lower) Cambrian Period.