Classification of Blodgett 1992
G. †Mastigospira La Rocque 1949
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†Mastigospira alata Whiteaves 1892
†Mastigospira ingens La Rocque 1949
†Mastigospira intermedia La Rocque 1949
†Mastigospira weberae Blodgett 1992
G. †Buechelia Schlüter 1894
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†Buechelia goldfussi Schlüter 1894
†Buechelia nodosa Blodgett 1992
†Buechelia tyrrelli Whiteaves 1892
G. †Euryzone Koken 1896
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†Euryzone arata Hall 1862
†Euryzone latitornata Linsley 1968
†Euryzone petilitornata Linsley 1968
†Euryzone pharkidopyndax Linsley 1968
G. †Gyronema Ulrich and Scofield 1897
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†Gyronema filicostata Spriestersbach 1942
†Gyronema ormistoni Blodgett 1992
†Gyronema speciosum Whiteaves 1892
†Gyronema typicum Fraunfelter 1973
G. †Peruvispira Chronic 1949
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†Peruvispira churkini Blodgett 1992
†Peruvispira delicata Chronic 1949
Fm. †Omphalotrochidae Knight 1945
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G. †Pseudomphalotrochus Blodgett 1992
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†Pseudomphalotrochus hoffmani Linsley and Yochelson 1973
†Pseudomphalotrochus leonhardi d’Archiac and de Verneuil 1842
†Pseudomphalotrochus linsleyi Blodgett 1992
Fm. †Loxonematidae Koken 1889
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G. †Clathronema Blodgett 1992
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†Clathronema cancellata Goldfuss 1844
†Clathronema cancellata Goldfuss 1844
†Clathronema cancellata Cleland 1911
†Clathronema cloughi Blodgett 1992
†Clathronema reticulata Phillips 1841
†Clathronema striatus d'Eichwald 1860
Fm. †Omphalocirridae Wenz 1938
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G. †Liomphalus Chapman 1916
G. †Omphalocirrus de Ryckholt 1860
Subfm. †Pseudozygopleurinae Knight 1930
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Subg. †Straparollus (Euomphalus) Sowerby 1814
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†Straparollus (Euomphalus) bundtzeni Blodgett 1992
Subg. †Bellerophon (Bellerophon) de Montfort 1808
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†Bellerophon (Bellerophon) chapmani Blodgett 1992
†Bellerophon (Bellerophon) livengoodensis Blodgett 1992