Classification of the genus Pentamerus

G. †Pentamerus Sowerby 1813
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Subg. †Pentamerus (Barrandella) Hall and Clarke 1892
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†Barrandella kindlei Northrop 1939
Subg. †Pentamerus (Supertrilobus) Boucot and Johnson 1979
†Pentamerus asiaticus Cocks 1979
†Pentamerus comis Owen 1852
†Pentamerus gothlandicus Lebedev 1892
†Pentamerus lotis Walcott 1884
†Pentamerus oblongus de Sowerby 1839
†Pentamerus palaformis Jin and Copper 2000