Classification of Summesberger 1992
Or. †Ammonoidea Zittel 1884 [ammonite]
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Subor. †Ammonitina Hyatt 1889
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Superfm. †Acanthocerataceae de Grossouvre 1894
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Fm. †Acanthoceratidae Grossouvre 1894
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Subfm. †Euomphaloceratinae Cooper 1978
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Subfm. †Mammitinae Hyatt 1900
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G. †Spathites Kummel and Decker 1954
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Subg. †Spathites (Jeanrogericeras) Wiedmann 1960
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†Spathites (Jeanrogericeras) pachycostatus Summesberger 1992
Fm. †Collignoniceratidae Wright and Wright 1951
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Subfm. †Collignoniceratinae Wright and Wright 1951
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Superfm. †Desmocerataceae Zittel 1895
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Subor. †Ancyloceratina Wiedmann 1966
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Superfm. †Turrilitaceae Gill 1871
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Fm. †Baculitidae Gill 1871
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G. †Baculites Lamarck 1799
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†Baculites yokoyamai Tokunga and Shimizu 1926
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Invalid names: Baculites besairiei Collignon 1931 [synonym]
Subor. †Lytoceratina Hyatt 1899
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Superfm. †Tetragonitaceae Hyatt 1900
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