Genus: Cyrtactinoceras Hyatt in Zittel, 1900 † (syn: Cyrtoactinoceras - DB: 2 SP, 1 IMG)
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Genus: Ephippiorthoceras Foerste, 1924 † (DB: 3 SP, 0 IMG)
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Genus: Gangshanoceras Zou, 1988 † (DB: 5 SP, 0 IMG)
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Genus: Gorbyoceras Shimizu & Obata, 1935 † (DB: 7 SP, 1 IMG)
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Genus: Isorthoceras Flower, 1962 † (DB: 12 SP, 0 IMG)
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6875000027
Isorthoceras
suave
(FOSSIL)
(Angelin & Lindström, 1880 †)
Sweden, Dalarna, Rättvik
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Genus: Mesnaquaceras Flower, 1955 † (DB: 1 SP, 0 IMG)
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Genus: Monomuchites Wilson, 1961 † (DB: 3 SP, 0 IMG)
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Genus: Orthonybyoceras Shimizu & Obata, 1935 † (DB: 1 SP, 0 IMG)
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Genus: Palaeocycloceras Balashov, 1968 † (DB: 1 SP, 0 IMG)
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