Classification of Blau et al. 2000
Or. †Ammonoidea Zittel 1884 [ammonite]
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Subor. †Ammonitina Hyatt 1889
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Superfm. †Eoderocerataceae Spath 1929
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Fm. †Eoderoceratidae Spath 1929
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G. †Crucilobiceras Buckman 1920
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†Crucilobiceras densinodum Quenstedt 1845
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Invalid names: Crucilobiceras subdensinodum Spath 1925 [synonym]
G. †Eoderoceras Spath 1925
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†Eoderoceras armatum Sowerby 1815
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Invalid names: Ammonites miles Simpson 1855 [synonym], Deroceras eusculptum Lang and Spath 1926 [synonym], Deroceras obesum Spath 1925 [synonym], Eoderoceras postarmatum Hoffmann 1950 [synonym]
Fm. †Polymorphitidae Haug 1887
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Superfm. †Psilocerataceae Hyatt 1867
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Fm. †Echioceratidae Buckman 1913
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G. †Echioceras Bayle 1878
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†Echioceras raricostatum Zieten 1831
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Invalid names: Echioceras crassicostatum Trueman and Williams 1925 [synonym], Echioceras inflatum Trueman and Williams 1925 [synonym]
G. †Leptechioceras Buckman 1923
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†Leptechioceras macdonnelli Portlock 1843
†Leptechioceras meigeni Hug 1899
G. †Paltechioceras Buckman 1924
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†Paltechioceras oosteri Dumortier 1869
†Paltechioceras tardecrescens Buckman 1914
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Invalid names: Caloceras aplanatum Hyatt 1889 [synonym], Euechioceras insigne Trueman and Williams 1925 [synonym], Euechioceras nobile Trueman and Williams 1925 [synonym]
Fm. †Oxynoticeratidae Hyatt 1875
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