Ambonychiopsis osmundsbergensis (FOSSIL) Isberg, 1934 †
Cleionychia ottawaensis (FOSSIL) J.J.F. Whiteaves, 1908 †
Cleionychia oviformis (FOSSIL) Kobayashi, 1934 †
Paramytilarca oviformis (FOSSIL) Isberg, 1934 †
Mytilarca parallela (FOSSIL) Isberg, 1934 †
Mytilarca parens (FOSSIL) Barrande, 1881 †
Ambonychinia pediculata (FOSSIL) Isberg, 1934 †
Mytilarca percarinata (FOSSIL) R.P. Whitfield, 1882 †
Ambonychiopsis planistriata (FOSSIL) (J.W. Hall, 1861 †)
Amphicoelia pojetana (FOSSIL) Kríž, 2008 †
Mytilarca ponderosa (FOSSIL) J.W. Hall& R.P. Whitfield, 1869 †
Ambonychia praecursa (FOSSIL) Ulrich 1893 †
Cleionychia primitiva (FOSSIL) Isberg, 1934 †
Ambonychiopsis prolifica (FOSSIL) (Billings, 1866 †)
Cleionychia pulchella (FOSSIL) (Lindstrom, 1880 †)
Mytilarca pyrimadata (FOSSIL) J.W. Hall, 1883 †
Paramytilarca quadrangula (FOSSIL) Isberg, 1934 †
Ambonychinia quadrangulata (FOSSIL) Isberg, 1934 †
Ambonychinia quadrata (FOSSIL) (Hind, 1910 †)
Ambonychia radiata (FOSSIL) J.W. Hall 1847 †
Ambonychinia radiata (FOSSIL) Isberg, 1934 †
Byssopteria radiata (FOSSIL) J.W. Hall, 1883 †
Mytilarca regularis (FOSSIL) J.W. Hall, 1883 †
Plethomytilus retortus (FOSSIL) Whidborne, 1892 †
Gosseletia retusa (FOSSIL) J.W. Hall, 1883 †
Ambonychinia rhomboidalis (FOSSIL) Isberg, 1934 †
Cleionychia rhomboidea (FOSSIL) Ulrich, 1892 †
Ambonychia richmondensis (FOSSIL) Ulrich 1893 †
Mytilarca rowei (FOSSIL) Ohern in Ohern& C.J. Maynard 1913 †
Praeanomalodonta scutulata (FOSSIL) Isberg, 1934 †
Mytilarca semicircularis (FOSSIL) Isberg, 1934 †
Ambonychinia semistriata (FOSSIL) Isberg, 1934 †
Mytilarca sigilla (FOSSIL) J.W. Hall, 1876 †
Mytilarca siluriana (FOSSIL) Reed, 1927 †
Mytilarca simplex (FOSSIL) J.W. Hall, 1883 †