Classification of Wiedmann 1978

Or. †Lytoceratida Hyatt 1899
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Subor. †Ammonitina Hyatt 1889
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Superfm. †Acanthocerataceae de Grossouvre 1894
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Invalid names: Peroniceratidae Hyatt 1900 [empty]
Superfm. †Hoplitaceae Douvillé 1890
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Fm. †Placenticeratidae Hyatt 1900
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G. †Placenticeras Meek 1876
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†Placenticeras paraplanum Wiedmann 1978
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