Modiolopsis nilssoni (FOSSIL) (Hisinger, 1837 †)
Modiolopsis orthoconcavus (FOSSIL) Fisher, 1957 †
Modiolopsis ovata (FOSSIL) (T.A. Conrad, 1842 †)
Modiolopsis oweni (FOSSIL) Ulrich, 1894 †
Modiolopsis parviuscula (FOSSIL) Billings, 1859 †
Modiolopsis pojetai (FOSSIL) Jakobsen & al., 2016 †
Modiolopsis postlineata (FOSSIL) McCoy †
Modiolopsis pragensis (FOSSIL) Kríž & Steinová, 2009 †
Modiolopsis pygmaea (FOSSIL) Isberg, 1934 †
Modiolopsis similis (FOSSIL) Ulrich, 1892 †
Modiolopsis sowteri (FOSSIL) W.J. Raymond, 1905 †
Modiolopsis subgradata (FOSSIL) Reed, 1905 †
Modiolopsis subquadrilateralis (FOSSIL) Hudson, 1903 †
Modiolopsis vera (FOSSIL) Foerste, 1924 †
Modiomorpha alta (FOSSIL) (T.A. Conrad, 1841 †)
Modiomorpha barricanensis (FOSSIL) (Hicks) †
Modiomorpha concentrica (FOSSIL) (T.A. Conrad, 1838 †)
Modiomorpha kallholniense (FOSSIL) Isberg, 1934 †
Modiomorpha lata (FOSSIL) F.B. Meek, 1877 †
Modiomorpha mitchellae (FOSSIL) Cook, 1993 †
Modiomorpha mytiloides (FOSSIL) T.A. Conrad †
Modiomorpha ostbjorkae (FOSSIL) Isberg, 1934 †
Modiomorpha ovata (FOSSIL) F.B. Meek, 1877 †
Modiomorpha praecursor (FOSSIL) Frech, 1891 †
Modiomorpha quadrula (FOSSIL) J.W. Hall, 1885 †
Orthodesma approximatum (FOSSIL) Foerste, 1914 †
Orthodesma canaliculatum (FOSSIL) Ulrich, 1894 †
Orthodesma minnesotense (FOSSIL) Ulrich, 1894 †
Orthodesma nasutum (FOSSIL) (J.W. Hall, 1847 †)
Orthodesma postplicatum (FOSSIL) Foerste, 1914 †
Orthodesma prolatum (FOSSIL) Foerste, 1914 †
Orthodesma pulaskiense (FOSSIL) Foerste, 1914 †
Orthodesma rectum (FOSSIL) R.P. Whitfield, 1875 †
Orthodesma schucherti (FOSSIL) Ulrich, 1894 †
Orthodesma semiradiata (FOSSIL) Reed, 1905 †
Orthodesma subnasutum (FOSSIL) F.B. Meek & A.H. Worthen †,
Parallelodus obliquus (FOSSIL) R.M. Branson, 1909 †