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†Asaphida (Order) ..[†Alsataspidae] (Family) ..†Asaphoidea (Superfamily) ..[†Bettonia] (Genus) ..†Cyclopygoidea (Superfamily) ..[†Dikelokephaloidea] (Superfamily) ..†Keithia (Genus) ..†Lapidaria (Genus) ..[†Monkaspidae] (Family) ..†Neopeltis (Genus) ..†Niobe (Genus) ..†Ptychocephalus (Genus) ..[†Remopleuridioidea] (Superfamily) ..†Trinucleoidea (Superfamily) ..[†Anomocaroidea] (Superfamily) ....[†Dikelokephalinidae] (Family)

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Last updated: 28 Aug 2026