Classification of the family Planitrochidae
Fm. †Planitrochidae Knight 1956
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G. †Nematrochus Koken and Perner 1925
G. †Planitrochus Perner 1903
G. †Trochomphalus Koken and Perner 1925
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†Trochomphalus borkholmiensis Koken 1897
†Trochomphalus dimidiatus Koken 1896