Ambonychinia skalbergensis (FOSSIL) Isberg, 1934 †
Ambonychinia striata (FOSSIL) Isberg, 1934 †
Ambonychia suberecta (FOSSIL) Ulrich 1893 †
Mytilarca suberectus (FOSSIL) Ohern in Ohern& C.J. Maynard, 1913 †
Ambonychinia subiniqua (FOSSIL) Isberg, 1934 †
Ambonychinia subrotunda (FOSSIL) Isberg, 1934 †
Cleionychia subundata (FOSSIL) Ulrich, 1895 †
Cleionychia superba (FOSSIL) (Billings, 1866 †)
Gosseletia tawneyi (FOSSIL) Reed, 1917 †
Mytilarca thorslundi (FOSSIL) Isberg, 1934 †
Cleionychia traingularis (FOSSIL) Raasch in Shrock & Raasch,1937 †
Amphicoelia transplicata (FOSSIL) Isberg, 1934 †
Anomalocoelia transplicata (FOSSIL) Isberg, 1934 †
Cleionychia transversa (FOSSIL) (Portlock, 1843 †)
Mytilarca triangula (FOSSIL) Isberg, 1934 †
Lophonychia trigonale (FOSSIL) (Cleland, 1911 †)
Gosseletia triquetra (FOSSIL) (T.A. Conrad, 1838 †)
Amphicoelia ulrichi (FOSSIL) C.J. Maynard, 1913 †
Psilonychia ulrichi (FOSSIL) Isberg, 1934 †
Mytilarca umbonata (FOSSIL) J.W. Hall, 1883 †
Paramytilarca umbonella (FOSSIL) Isberg, 1934 †
Cleionychia undata (FOSSIL) (E. Emmons, 1842 †)
Ambonychinia undulata (FOSSIL) Isberg, 1934 †
Ambonychinia unisulcata (FOSSIL) Isberg, 1934 †
Paramytilarca ventricosa (FOSSIL) Isberg, 1934 †
Ambonychia vera (FOSSIL) Ulrich 1893 †
Silurinka vetula (FOSSIL) Kriz 2005 †
Ambonychia volitans (FOSSIL) Barrande, 1881 †
Ambonychinia volvens (FOSSIL) Isberg, 1934 †
Mytilarca wabashensis (FOSSIL) Kindle & M. Breger,1904 †
Ambonychiopsis waylandsmithi (FOSSIL) Fisher, 1957 †
Glyptonychia wilsoni (FOSSIL) Pojeta& Gilbert-Tomlinson, 1977 †