1. Species Platyceras contortus (de Koninck, 1883) †
2. Species Platyceras cornutum (Hisinger, 1837) †
   1. Variety Platyceras cornutum var. loricatum Lindström, 1884 † (uncertain > unassessed)
3. Species Platyceras decorum Talent & Philip, 1956 †
4. Species Platyceras inaequale (de Koninck, 1883) †
5. Species Platyceras latum Keyes, 1888 †
6. Species Platyceras mansfieldense Tassell, 1977 †
7. Species Platyceras minutum Chapman, 1916 †
8. Species Platyceras nasutum S. A. Miller, 1891 †
9. Species Platyceras neverovoensis Mazaev, 1996 †
10. Species Platyceras parasiticum (Trautschold, 1867) †
11. Species Platyceras sagum Mazaev, 2019 †
12. Species Platyceras trirotundolobatum Talent & Philip, 1956 †
13. Species Platyceras uncus (de Koninck, 1883) †
14. Species Platyceras vetusta (J. De C. Sowerby, 1829) †
15. Subgenus Platyceras (Orthonychia) J. Hall, 1843 † accepted as Orthonychia J. Hall, 1843 † (unaccepted > superseded rank)
    1. Species Platyceras (Orthonychia) egorovi Mazaev, 1996 † accepted as Orthonychia egorovi (Mazaev, 1996) †
    2. Species Platyceras (Orthonychia) enorme Lindström, 1884 † accepted as Orthonychia enorme (Lindström, 1884) † (unaccepted > superseded combination)
    3. Species Platyceras (Orthonychia) ivanovi Mazaev, 1996 † accepted as Orthonychia ivanovi (Mazaev, 1996) † (unaccepted > superseded combination)
    4. Species Platyceras (Orthonychia) parvum (Swallow, 1858) † accepted as Orthonychia parva (Swallow, 1858) † (unaccepted > superseded combination)
16. 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 superseded rank)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 superseded combination)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 superseded combination)
    3. Species Platyceras (Platyceras) neverovoensis Mazaev, 1996 † accepted as Platyceras neverovoensis Mazaev, 1996 †
    4. Species Platyceras (Platyceras) parasiticum (Trautschold, 1867) † accepted as Platyceras parasiticum (Trautschold, 1867) †
17. 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 superseded rank)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) †
18. Species Platyceras cornucapella Etheridge, 1896 † accepted as Rhabdocantha cornucapella (Etheridge, 1896) † (unaccepted > superseded combination, original combination)
19. Species Platyceras cylindricum (Talent & Philip, 1956) † accepted as Visitator cylindricus (Talent & Philip, 1956) † (unaccepted > superseded combination)
20. Species Platyceras depressum Ulrich & Scofield, 1897 † accepted as Helcionopsis depressum (Ulrich & Scofield, 1897) † (unaccepted > superseded combination)
21. Species Platyceras dumosum Conrad, 1840 † accepted as Spiniplatyceras dumosum (Conrad, 1840) † (original combination)
22. Species Platyceras enorme Lindström, 1884 † accepted as Orthonychia enorme (Lindström, 1884) † (unaccepted > superseded combination)
23. Species Platyceras inaequalis (de Koninck, 1883) † accepted as Platyceras inaequale (de Koninck, 1883) † (unaccepted > incorrect grammatical agreement of specific epithet)
24. Species Platyceras subrectum J. Hall, 1859 † accepted as Orthonychia subrectum (J. Hall, 1859) † (unaccepted > superseded combination)
25. Species Platyceras vetulum Sardeson, 1896 † accepted as Cyrtonellopsis vetulum (Sardeson, 1896) † (unaccepted > superseded combination)
26. Species Platyceras vetustum (J. de C. Sowerby, 1829) † accepted as Platyceras vetusta (J. De C. Sowerby, 1829) † (unaccepted > incorrect grammatical agreement of specific epithet)
27. Species Platyceras wisconsinensis Ulrich & Scofield, 1897 † accepted as Helcionopsis wisconsinensis (Ulrich & Scofield, 1897) † (unaccepted > superseded combination)
28. Species Platyceras ausushanensis X.-D. Qiao, 1983 † (uncertain > unassessed)
29. Species Platyceras breve G. B. Simpson, 1890 † (uncertain > unassessed)
30. Species Platyceras camurus X.-D. Qiao, 1983 † (uncertain > unassessed)
31. Species Platyceras conradi Walcott, 1884 † (uncertain > unassessed)
32. Species Platyceras cyathinum Lindström, 1884 † (uncertain > unassessed)
33. Species Platyceras disciforme Lindström, 1884 † (uncertain > unassessed)
34. Species Platyceras dorsale G. B. Simpson, 1890 † (uncertain > unassessed)
35. Species Platyceras etheridgei Tate, 1892 † (uncertain > unassessed)
36. Species Platyceras heishantouensis X.-D. Qiao, 1983 † (uncertain > unassessed)
37. Species Platyceras inaequale G. B. Simpson, 1890 † (uncertain > unassessed, secondary homonym of Platyceras inaequale (de Koninck, 1883))
38. Species Platyceras lodiense Meek, 1871 † (uncertain > unassessed)
39. Species Platyceras mitelliforme G. B. Simpson, 1890 † (uncertain > unassessed)
40. Species Platyceras moriensis X.-D. Qiao, 1983 † (uncertain > unassessed)
41. Species Platyceras striatum G. B. Simpson, 1890 † (uncertain > unassessed)
42. Species Platyceras tamuganensis X.-D. Qiao, 1983 † (uncertain > unassessed)
43. Species Platyceras thetiforme Walcott, 1884 † (uncertain > unassessed)
44. Species Platyceras tortum Meek, 1871 † (uncertain > unassessed)
45. Species Platyceras undulatum Walcott, 1884 † (uncertain > unassessed)
46. Species Platyceras varians G. B. Simpson, 1890 † (uncertain > unassessed)

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