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†Pachyosteomorphi ([unranked]) - pachyosteomorphs ..†Aspinothoracidi ([unranked]) ..[†Brachydeiroidea] (Superfamily) ..†Dunkleosteidae (Family) ..[†Dunkleosteoidea] (Superfamily) ..†Panxiosteidae (Family) ..[†Plourdosteidae] (Family) ..†Protitanichthys (Genus) ..[†Rachiosteidae] (Family) ..†Rhachiosteidae (Family) ..†Westralichthys (Genus) ..†Xiangshuiosteus (Genus) ..[†Aspinothoracida] ([unranked])

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Last updated: 28 Aug 2026