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[Elasmobranchii] (Subclass) - shark-like fishes ..[†Cladoselachida] (Order) ..[†Cladoselachimorpha] (Infraclass) ..[†Edestida] (Order) ..[†Eugeneodontida] (Order) ..[Euselachii] (Superorder) ..[Euselachii] (Cohort) - spined sharks and relatives ..[Euselachii] (Infraclass) - sharks and rays, and related fossils ..[Euselachii] (Order) ..[†Lugalepidida] (Order) ..[Neoselachii] (Order) ..[†Orodontida] (Order) ..[†Squatinactida] (Order) ..[†unnamed] (Infraclass) ..†Venustodus (Genus) ..[†Xenacanthimorpha] (Infraclass) ..[†Helicoprionida] (Order)

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Last updated: 21 Sep 2025