Classification of the infraorder Ptenoglossa
Unr. †Ptenoglossa Gray 1853
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G. †Brevizygia Gründel 1999
G. †Erratopleura Gründel 1998
Subor. †Gymnoglossa
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Superfm. †Muricacea de Costa 1776
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Fm. Thaididae Röding 1798
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G. Drupa Röding 1798
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Subg. Drupa (Cronia) Adams and A. 1853
Subg. Drupa (Drupa) Röding 1798
Invalid names: Ricinella Schumacher 1817 [synonym], Ricinula Lamarck 1816 [synonym], Sistrum Montfort 1810 [synonym]
Superfm. Volutacea Rafinesque 1815
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Fm. Vasidae Adams and Adams 1853
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G. †Eovasum Douvillé 1920
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†Eovasum douvillei Olsson 1930
†Eovasum frequens Mayer Emar 1895
†Eovasum haimei d'Archiac and Haime 1854
†Euvasum basatinensis Abbass 1967
†Euvasum feranensis Abbass 1967
G. †Lupira Stephenson 1941
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†Lupira disparila Sohl 1964
†Lupira pyriformis Stephenson 1941
†Lupira turbinea Sohl 1964
†Lupira variabilis Wade 1926
G. Ptychatractus Stimpson 1865
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Subg. Ptychatractus (Ptychatractus) Stimpson 1865
†Ptychatractus angustus Deshayes 1835
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Invalid names: Ptychatractus terebelloides d'Orbigny 1850 [synonym]
†Ptychatractus interruptus Pilkington 1804
G. †Sceptrum
G. Tudicla Röding 1798
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Subg. Tudicla (Tudicla) Röding 1798
Tudicla aegyptiaca Mayer-Eyma 1895
†Tudicla angulata Tate 1888
†Tudicla cassidariformis Traub 1938
†Tudicla costata Tate 1888
Tudicla secans Mayer-Eymar 1895
†Tudicla thebaica Cuvillier 1933
†Tudicla turbinata Tate 1888
Tudicla umbilicaris Mayer-Eyma 1895
Invalid names: Tudicula Ryckholt 1862 [objective synonym]
Fm. †Protoculidae Bandel 1991
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G. †Undularia Koken 1892
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Subg. †Undularia (Orthostomia) Kittl 1899
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†Undularia (Orthostomia) ambrosinii Stoppani 1858
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Invalid names: Trochus cainalli Stoppani 1858 [synonym], Trochus incisus Stoppani 1858 [synonym]
†Undularia (Orthostomia) brevissima Kittl 1894
†Undularia (Orthostomia) concava Stoppani 1857
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Invalid names: Chemnitzia trochoides Stoppani 1857 [synonym]
†Undularia (Orthostomia) fusoides Stoppani 1857
†Undularia (Orthostomia) pillae Stoppani 1858
Subg. †Undularia (Stereokion)
†Undularia disputata Kittl 1899
†Undularia scalata von Schlotheim 1892