Platyceras symmetricum (FOSSIL) J.W. Hall, 1862 †
Platyceras terminalis (FOSSIL) (Whidborne, 1889 †)
Platyceras thetis (FOSSIL) J.W. Hall, 1862 †
Platyceras trilobatum (FOSSIL) J.W. Hall, 1859 †
Platyceras trojani (FOSSIL) Blodgett & Johnson,1992 †
Platyceras uncinatus (FOSSIL) F.A. Roemer, 1852 †
Platyceras undata (FOSSIL) J.W. Hall, 1859 †
Platyceras unicus (FOSSIL) J.W. Hall, 1879 †
Platyceras ussheri (FOSSIL) (Whidborne, 1891 †)
Platyceras verisimile (FOSSIL) Reed †
Platyceras verrucosum (FOSSIL) Barrois, 1889 †
Platyceras vetusta (FOSSIL) (Sowerby, 1829 †)
Platyceras villmarensis (FOSSIL) Basse & Heidelberger,2002 †
Platyceras yochelsoni (FOSSIL) Kulas & Batten, 1997 †
Platyceras zinkeni (FOSSIL) A. Römer, 1843 †
Platyostoma adstrictum (FOSSIL) Lindström, 1884 †
Platyostoma allardycei (FOSSIL) A.H. Clarke, 1913 †
Platyostoma antiquuis (FOSSIL) W.H. Webster, 1905 †
Platyostoma boggsi (FOSSIL) Rohr & al., 1981 †
Platyostoma brownsportense (FOSSIL) Foerste, 1903 †
Platyostoma cliftonensis (FOSSIL) Foerste, 1909 †
Platyostoma cornutum (FOSSIL) (Hisinger, 1837 †)
Platyostoma daytonense (FOSSIL) Foerste, 1923 †
Platyostoma deforme (FOSSIL) (Sedgwick & Murchison,1840 †)
Platyostoma delicata (FOSSIL) (Talent & Philip, 1956 †)
Platyostoma desmatum (FOSSIL) A.H. Clarke, 1904 †
Platyostoma euomphaloides (FOSSIL) J.W. Hall, 1879 †
Platyostoma ferrigenum (FOSSIL) J. Perner, 1911 †
Platyostoma gebhardi (FOSSIL) (T.A. Conrad, 1840 †)
Platyostoma grayvillensis (FOSSIL) A.H. Worthen, 1882 †
Platyostoma humile (FOSSIL) Billings, 1866 †
Platyostoma humilis (FOSSIL) A.H. Clarke & Swartz,1913 †
Platyostoma incisum (FOSSIL) A.C. Chapman, 1916 †
Platyostoma indica (FOSSIL) L. Waagen, 1880 †
Platyostoma insolita (FOSSIL) W.H. Webster, 1906 †