Palaeocapulus trigonus (FOSSIL) (G.A. Goldfuss, 1844 †)
Platyceras trilobatum (FOSSIL) J.W. Hall, 1859 †
Platyceras trojani (FOSSIL) Blodgett & Johnson,1992 †
Platyostoma tumidum (FOSSIL) J.J.F. Whiteaves, 1892 †
Platyostoma turbinata (FOSSIL) (J.W. Hall, 1861 †)
Spironemella turgida (FOSSIL) C.O. Waterhouse, 1987 †
Keeneia twelvetreesi (FOSSIL) Dun, 1913 †
Spinyplatyceras tylotus (FOSSIL) (Whidborne, 1891 †)
Devononema typicum (FOSSIL) Fraunfelter, 1973 †
Platyceras uncinatus (FOSSIL) F.A. Roemer, 1852 †
Palaeocapulus undata (FOSSIL) (Winchell, 1865 †)
Platyceras undata (FOSSIL) J.W. Hall, 1859 †
Cyclonema undifera (FOSSIL) (McCoy) †
Strophostylus unica (FOSSIL) J.W. Hall, 1862 †
Platyceras unicus (FOSSIL) J.W. Hall, 1879 †
Platyostoma unisulcata (FOSSIL) (T.A. Conrad, 1842 †)
Platyceras ussheri (FOSSIL) (Whidborne, 1891 †)
Cyclonema varians (FOSSIL) Billings, 1857 †
Ptychospirina varians (FOSSIL) (J.W. Hall, 1876 †)
Cyclonema varicosum (FOSSIL) J.W. Hall, 1861 †
Cyclonema varispirum (FOSSIL) Twenhofel, 1928 †
Cyclonema ventricosa (FOSSIL) J.W. Hall, 1852 †
Platyostoma ventricosum (FOSSIL) T.A. Conrad, 1842 †
Platyceras verisimile (FOSSIL) Reed †
Platyceras verrucosum (FOSSIL) Barrois, 1889 †
Platyceras vetusta (FOSSIL) (Sowerby, 1829 †)
Platyceras villmarensis (FOSSIL) Basse & Heidelberger,2002 †
Brokenriveria virginensis (FOSSIL) Cook & al., 2003 †
Platyschisma vitrea (FOSSIL) E.K. Yoo, 1994 †
Euthyrhachis vulgaris (FOSSIL) (J. Perner, 1907 †)
Platyostoma wortheni (FOSSIL) T.A. Conrad 1842 †
Rhineoderma wortheni (FOSSIL) (J.W. Hall, 1856 †)
Strophostylus wortheni (FOSSIL) Weller, 1916 †
Platyceras yochelsoni (FOSSIL) Kulas & Batten, 1997 †
Platyceras zinkeni (FOSSIL) A. Römer, 1843 †