Palaeocapulus acutirostre (FOSSIL) (J.W. Hall, 1856 †)
Palaeocapulus equilateralis (FOSSIL) (J.W. Hall, 1859 †)
Palaeocapulus morsei (FOSSIL) Hoare, 2004 †
Palaeocapulus piso (FOSSIL) (Walcott, 1884 †)
Palaeocapulus trigonus (FOSSIL) (G.A. Goldfuss, 1844 †)
Palaeocapulus undata (FOSSIL) (Winchell, 1865 †)
Paraplatyschisma etheridgei (FOSSIL) C.O. Waterhouse, 1987 †
Paraplatyschisma rotunda (FOSSIL) (Etheridge, 1872 †)
Platyceras abundans (FOSSIL) (J. Wanner, 1922 †)
Platyceras ammon (FOSSIL) J.W. Hall, 1862 †
Platyceras angulatum (FOSSIL) J.W. Hall, 1852 †
Platyceras angustum (FOSSIL) (B. Phillips, 1836 †)
Platyceras argo (FOSSIL) J.W. Hall, 1862 †
Platyceras attenuatum (FOSSIL) J.W. Hall, 1859 †
Platyceras auriculatum (FOSSIL) J.W. Hall, 1876 †
Platyceras billingsi (FOSSIL) J.W. Hall, 1859 †
Platyceras bistrami (FOSSIL) Knod, 1908 †
Platyceras bucculentum (FOSSIL) J.W. Hall, 1862 †
Platyceras callossum (FOSSIL) J.W. Hall, 1859 †
Platyceras canalicatum (FOSSIL) Angelin & Lindström,1880 †
Platyceras carinatum (FOSSIL) J.W. Hall, 1862 †
Platyceras chapmani (FOSSIL) Williams & M. Breger,1916 †
Platyceras colonus (FOSSIL) Holzapfel, 1895 †
Platyceras columbinus (FOSSIL) (Whidborne, 1889 †)
Platyceras compressum (FOSSIL) Nettleroth †
Platyceras compressum (FOSSIL) Jhaveri, 1969 †
Platyceras compressum (FOSSIL) A.H. Clarke & Swartz,1913 †
Platyceras compressus (FOSSIL) (G.A. Goldfuss, 1832 †)
Platyceras compressus (FOSSIL) T.A. Conrad 1840 †
Platyceras conicum (FOSSIL) (J.W. Hall, 1862 †)
Platyceras contortum (FOSSIL) Barrois, 1889 †
Platyceras contortus (FOSSIL) (A. Römer, 1843 †)
Platyceras cordatus (FOSSIL) Whidborne, 1889 †
Platyceras crassum (FOSSIL) J.W. Hall, 1862 †
Platyceras cymbium (FOSSIL) J.W. Hall, 1862 †
Platyceras daschi (FOSSIL) Rohr & Smith, 1978 †
Platyceras decorum (FOSSIL) Talent & Philip, 1956 †
Platyceras dilatans (FOSSIL) J. Perner, 1911 †