SubFamily: HARPOCERATINAE - Genus: Harpoceras Sowerby, 1820 † (syn: Glyptarpites, Phaularpites, Tardarpoceras, Maconiceras, Harpoceratoides - DB: 14 SP, 10 IMG)
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SubFamily: HARPOCERATINAE - Genus: Osperleioceras Krimholtz & Tazikhin, 1957 † (syn: Pseudopolyplectus - DB: 8 SP, 6 IMG)
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SubFamily: HARPOCERATINAE - Genus: Ovaticeras Buckman, 1918 † (DB: 1 SP, 0 IMG)
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SubFamily: HARPOCERATINAE - Genus: Pseudolioceras Young & Bird, 1822 † (syn: Praehaploceras - DB: 9 SP, 5 IMG)
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SubFamily: HARPOCERATINAE - Subgenus: Pseudolioceras (Tugurites) Westermann, 1969 † (DB: 4 SP, 1 IMG)
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SubFamily: HARPOCERATINAE - Genus: Tiltoniceras Buckman , 1913 † (syn: Pacificeras - DB: 4 SP, 1 IMG)
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SubFamily: HILDOCERATINAE - Genus: Hildaites Unknown † (syn: Hildoceratoides, Murleyiceras, Cingolites, Harpohildoceras - DB: 20 SP, 6 IMG)
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