Classification of the genus Pycnomphalus
G. †Pycnomphalus Lindström 1884
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†Pycnomphalus acutus Lindström 1884
†Pycnomphalus colemani Parks 1915
†Pycnomphalus concurrens Perner 1903
†Pycnomphalus helicites de Sowerby and Murchison 1839
†Pycnomphalus immaturus Perner 1903
†Pycnomphalus inflatus Perner 1903
†Pycnomphalus nummularius Perner 1903
†Pycnomphalus obesus Lindström 1884
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Invalid names: Pycnomphalus solarioides Hall 1852 [synonym]
†Pycnomphalus placidus Perner 1903
†Pycnomphalus trochiformis Lindström 1884