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†Phacopida (Order) ..†Calymenina (Suborder) ..†Cheirurina (Suborder) ..†Libertella (Genus) ..†Phacopina (Suborder) ....†Acastoidea (Superfamily) ....†Dalmanitoidea (Superfamily) ....†Diaphanometopidae (Family) ....†Phacopoidea (Superfamily) ....†Prosopiscidae (Family)

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Last updated: 28 Aug 2026