1. Species Platyceras decorum Talent & Philip, 1956 †
2. Species Platyceras latum Keyes, 1888 †
3. Species Platyceras mansfieldense Tassell, 1977 †
4. Species Platyceras minutum Chapman, 1916 †
5. Species Platyceras nasutum S. A. Miller, 1891 †
6. Species Platyceras sagum Mazaev, 2019 †
7. Species Platyceras trirotundolobatum Talent & Philip, 1956 †
8. Species Platyceras vetusta (J. De C. Sowerby, 1829) †
9. Subgenus Platyceras (Orthonychia) J. Hall, 1843 † accepted as Orthonychia J. Hall, 1843 † (unaccepted > superseded rank)
   1. Species Platyceras (Orthonychia) enorme Lindström, 1884 † accepted as Orthonychia enorme (Lindström, 1884) † (unaccepted > superseded combination)
   2. Species Platyceras (Orthonychia) parvum (Swallow, 1858) † accepted as Orthonychia parva (Swallow, 1858) † (unaccepted > superseded combination)
10. Subgenus Platyceras (Platyceras) Conrad, 1840 † accepted as Platyceras Conrad, 1840 † (unaccepted > superseded rank)
    1. Species Platyceras (Platyceras) latum Keyes, 1888 † accepted as Platyceras latum Keyes, 1888 † (unaccepted > superseded combination)
    2. Species Platyceras (Platyceras) nasutum S. A. Miller, 1891 † accepted as Platyceras nasutum S. A. Miller, 1891 † (unaccepted > superseded combination)
11. Subgenus Platyceras (Platyostoma) Conrad, 1842 † accepted as Platyostoma Conrad, 1842 † (unaccepted > superseded rank)
    1. Species Platyceras (Platyostoma) incisum (Chapman, 1916) † accepted as Platyostoma incisum (Chapman, 1916) †
12. Species Platyceras cornucapella Etheridge, 1896 † accepted as Rhabdocantha cornucapella (Etheridge, 1896) † (unaccepted > superseded combination, original combination)
13. Species Platyceras cylindricum (Talent & Philip, 1956) † accepted as Visitator cylindricus (Talent & Philip, 1956) † (unaccepted > superseded combination)
14. Species Platyceras depressum Ulrich & Scofield, 1897 † accepted as Helcionopsis depressum (Ulrich & Scofield, 1897) † (unaccepted > superseded combination)
15. Species Platyceras dumosum Conrad, 1840 † accepted as Spiniplatyceras dumosum (Conrad, 1840) † (original combination)
16. Species Platyceras enorme Lindström, 1884 † accepted as Orthonychia enorme (Lindström, 1884) † (unaccepted > superseded combination)
17. Species Platyceras subrectum J. Hall, 1859 † accepted as Orthonychia subrectum (J. Hall, 1859) † (unaccepted > superseded combination)
18. Species Platyceras vetulum Sardeson, 1896 † accepted as Cyrtonellopsis vetulum (Sardeson, 1896) † (unaccepted > superseded combination)
19. Species Platyceras wisconsinensis Ulrich & Scofield, 1897 † accepted as Helcionopsis wisconsinensis (Ulrich & Scofield, 1897) † (unaccepted > superseded combination)
20. Species Platyceras ausushanensis X.-D. Qiao, 1983 † (uncertain > unassessed)
21. Species Platyceras camurus X.-D. Qiao, 1983 † (uncertain > unassessed)
22. Species Platyceras etheridgei Tate, 1892 † (uncertain > unassessed)
23. Species Platyceras heishantouensis X.-D. Qiao, 1983 † (uncertain > unassessed)
24. Species Platyceras lodiense Meek, 1871 † (uncertain > unassessed)
25. Species Platyceras moriensis X.-D. Qiao, 1983 † (uncertain > unassessed)
26. Species Platyceras tamuganensis X.-D. Qiao, 1983 † (uncertain > unassessed)
27. Species Platyceras tortum Meek, 1871 † (uncertain > unassessed)

 The webpage text is licensed under a Creative Commons Attribution 4.0 License