Classification of the genus Ceratopea
G. †Ceratopea Ulrich 1911
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†Ceratopea ankylosa Cullison 1944
†Ceratopea billingsi Yochelson 1964
†Ceratopea buttsi Yochelson and Bridge 1957
†Ceratopea canadensis Billings 1865
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Invalid names: Ceratopea arabella Billings 1865 [synonym], Ceratopea calcifera Billings 1859 [synonym], Ceratopea macroconica Flower 1968 [synonym], Ceratopea praevium Whitfield 1889 [synonym], Pleurotomaria normani Billings 1865 [synonym]
†Ceratopea capuliformis Oder 1932
†Ceratopea compressum Whitfield 1886
†Ceratopea depressa Butts 1926
†Ceratopea grandis Butts 1926
†Ceratopea hami Yochelson and Bridge 1957
†Ceratopea harpya Billings 1865
†Ceratopea inflata Cullison 1944
†Ceratopea kawasakii Kobayashi 1930
†Ceratopea keithi Ulrich 1911
†Ceratopea latiumbilicata Poulsen 1927
†Ceratopea laurentina Billings 1859
†Ceratopea lemonei Flower 1968
†Ceratopea lenticularis Flower 1968
†Ceratopea medfraensis Rohr and Blodgett 1988
†Ceratopea miser Billings 1859
†Ceratopea numeria Billings 1865
†Ceratopea obtusa Cleland 1900
†Ceratopea parvum Stauffer 1937
†Ceratopea pygmaea Stauffer 1937
†Ceratopea sculpta Cullison 1944
†Ceratopea sinclairensis Kobayashi 1955
†Ceratopea subconica Oder 1932
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Invalid names: Ceratopea inflata Cullison 1944 [synonym], Ceratopea jonesi Cullison 1944 [synonym], Ceratopea sulcata Oder 1932 [synonym]
†Ceratopea tennesseensis Oder 1932
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Invalid names: Ceratopea calceoliformis Oder 1932 [synonym], Ceratopea compressa Oder 1932 [synonym], Ceratopea cuneata Oder 1932 [synonym], Ceratopea jenkinensis Cullison 1944 [synonym]
†Ceratopea unguis Yochelson and Bridge 1957
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Invalid names: Eotomaria depressa Cullison 1944 [replaced]
†Ceratopea vagrans Billings 1865
†Ceratopea wisei Fix 1975
†Raphistomina sinclairensis acuta Kobayashi 1955
Invalid names: Proliospira Flower 1968 [synonym], Roubidouxia Butts 1926 [synonym]