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Bivalvia (Class) - bivalves ..[Anomalodesmacea] (Order) ..[Anomalodesmata] (Subclass) ..†Archaeocardiidae (Family) ..Autobranchia (Subclass) ..†Camyidae (Family) ..†Cardiolariidae (Family) ..†Cirravidae (Family) ..[Cryptodonta] (Subclass) ..†Delia (Genus) ..[Eulamellibranchiata] (Order) ..†Fordillidae (Family) ..[Heterodonta] (Subclass) ..[Lamellibranchia] (Subclass) ..†Laurskiidae (Family) ..[Metabranchia] (Subclass) ..[Palaeoheterodonta] (Subclass) ..[Paleotaxodonta] (Subclass) ..[Protobranchia] ..Protobranchia (Subclass) ..[Pteriomorpha] ..[Pteriomorphia] (Subclass) ..†Thoraliidae (Family) ..†Tuarangiidae (Family) ..[Paleoheterodonta] (Subclass) ....†Fordilloida (Order) ....†Modiomorphoida (Order) ....[Unionoida] (Order)

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Last updated: 28 Aug 2026