1. Species Ecphora amyae Petuch & Drolshagen, 2010 †
2. Species Ecphora asheri Petuch, 1988 †
3. Species Ecphora calvertensis Petuch, 1988 †
4. Species Ecphora chesapeakensis Petuch, 1992 †
5. Species Ecphora conoyensis Petuch, 2003 †
6. Species Ecphora gardnerae S. Wilson, 1987 †
7. Species Ecphora germonae Ward & Gilinsky, 1988 †
8. Species Ecphora grulkei Petuch & Berschauer, 2023 †
9. Species Ecphora harasewychi Petuch, 1989 †
10. Species Ecphora kochi Ward & Gilinsky, 1988 †
11. Species Ecphora leecreekensis Petuch, 1989 †
12. Species Ecphora mattinglyi Petuch, 2003 †
13. Species Ecphora meganae Ward & Gilinsky, 1988 †
14. Species Ecphora pachycostata Petuch, 1989 †
15. Species Ecphora quadricostata (Say, 1824) †
16. Species Ecphora rikeri Petuch, 1988 †
17. Species Ecphora roxaneae Petuch, 1991 †
18. Species Ecphora sandgatesensis Petuch, 1989 †
19. Species Ecphora violetae Petuch, 1988 †
20. Species Ecphora wardi Petuch, 1989 †
21. Species Ecphora whiteoakensis Ward & Gilinsky, 1988 †
22. Species Ecphora williamsi Ward & Gilinsky, 1988 †
23. Subgenus Ecphora (Latecphora) Petuch, 1989 † accepted as Latecphora Petuch, 1989 † (unaccepted > superseded rank)
    1. Species Ecphora (Latecphora) bradleyae Petuch, 1987 † accepted as Latecphora bradleyae (Petuch, 1987) † (unaccepted > superseded combination)
    2. Species Ecphora (Latecphora) violetae Petuch, 1988 † accepted as Latecphora violetae (Petuch, 1988) † (unaccepted > superseded combination)
24. Subgenus Ecphora (Stenomphalus) F. Sandberger, 1861 † accepted as Stenomphalus F. Sandberger, 1861 † (unaccepted > superseded rank)
    1. Species Ecphora (Stenomphalus) aurora D. Wilson, 1987 † accepted as Siphoecphora aurora (D. Wilson, 1987) † (unaccepted > superseded combination)
25. Subgenus Ecphora (Trisecphora) Petuch, 1988 † accepted as Trisecphora Petuch, 1988 † (unaccepted > superseded rank)
    1. Species Ecphora (Trisecphora) chamnessi Petuch, 1989 † accepted as Trisecphora chamnessi (Petuch, 1989) † (unaccepted > superseded combination)
    2. Species Ecphora (Trisecphora) eccentrica Petuch, 1989 † accepted as Trisecphora eccentrica (Petuch, 1989) †
    3. Species Ecphora (Trisecphora) martini Petuch, 1988 † accepted as Trisecphora martini (Petuch, 1988) † (unaccepted > superseded combination)
    4. Species Ecphora (Trisecphora) patuxentia Petuch, 1988 † accepted as Trisecphora patuxentia (Petuch, 1988) † (unaccepted > superseded combination)
    5. Species Ecphora (Trisecphora) prunicola Petuch, 1988 † accepted as Trisecphora prunicola (Petuch, 1988) †
    6. Species Ecphora (Trisecphora) schmidti Petuch, 1989 † accepted as Trisecphora schmidti (Petuch, 1989) † (unaccepted > superseded combination)
    7. Species Ecphora (Trisecphora) scientistensis Petuch, 1992 † accepted as Trisecphora scientistensis (Petuch, 1992) † (unaccepted > superseded combination)
    8. Species Ecphora (Trisecphora) smithae Petuch, 1988 † accepted as Trisecphora smithae (Petuch, 1988) † (unaccepted > superseded combination)
    9. Species Ecphora (Trisecphora) tricostata G. C. Martin, 1904 † accepted as Trisecphora tricostata (G. C. Martin, 1904) † (unaccepted > superseded combination)
    10. Species Ecphora (Trisecphora) xenos Petuch, 1989 † accepted as Globecphora parvicostata (Pilsbry, 1911) † (unaccepted > junior subjective synonym)
26. Species Ecphora bradleyae Petuch, 1987 † accepted as Latecphora bradleyae (Petuch, 1987) † (unaccepted > superseded combination)
27. Species Ecphora chamnessi Petuch, 1989 † accepted as Trisecphora chamnessi (Petuch, 1989) † (unaccepted > superseded combination)
28. Species Ecphora choptankensis Petuch, 1988 † accepted as Planecphora choptankensis (Petuch, 1988) † (unaccepted > superseded combination)
29. Species Ecphora eccentrica Petuch, 1989 † accepted as Trisecphora eccentrica (Petuch, 1989) † (unaccepted > superseded combination)
30. Species Ecphora floridana Petuch, 1989 † accepted as Globecphora floridana (Petuch, 1989) † (unaccepted > superseded combination)
31. Species Ecphora hertweckorum Petuch, 1987 † accepted as Planecphora hertweckorum (Petuch, 1987) † (unaccepted > superseded combination)
32. Species Ecphora kalyx Petuch, 1988 † accepted as Ecphorosycon kalyx (Petuch, 1988) † (unaccepted > superseded combination)
33. Species Ecphora martini Petuch, 1988 † accepted as Trisecphora martini (Petuch, 1988) † (unaccepted > superseded combination)
34. Species Ecphora parvicostata Pilsbry, 1911 † accepted as Globecphora parvicostata (Pilsbry, 1911) † (unaccepted > superseded combination)
35. Species Ecphora patuxentia Petuch, 1988 † accepted as Trisecphora patuxentia (Petuch, 1988) † (unaccepted > superseded combination)
36. Species Ecphora proquadricostata Wade, 1917 † accepted as Pseudecphora proquadricostata (Wade, 1916) † (unaccepted > superseded combination)
37. Species Ecphora prunicola Petuch, 1989 † accepted as Trisecphora prunicola (Petuch, 1988) † (unaccepted > superseded combination)
38. Species Ecphora schmidti Petuch, 1989 † accepted as Trisecphora schmidti (Petuch, 1989) † (unaccepted > superseded combination)
39. Species Ecphora scientistensis Petuch, 1992 † accepted as Trisecphora scientistensis (Petuch, 1992) † (unaccepted > superseded combination)
40. Species Ecphora smithae Petuch, 1988 † accepted as Trisecphora smithae (Petuch, 1988) † (unaccepted > superseded combination)
41. Species Ecphora striatula Petuch, 1986 † accepted as Ecphora quadricostata striatula Petuch, 1986 † (unaccepted > superseded rank)
42. Species Ecphora tricostata G. C. Martin, 1904 † accepted as Trisecphora tricostata (G. C. Martin, 1904) † (unaccepted > superseded combination)
43. Species Ecphora turneri Petuch, 1992 † accepted as Planecphora turneri (Petuch, 1992) † (unaccepted > superseded combination)
44. Subgenus Ecphora (Ecphora) Conrad, 1843 † represented as Ecphora Conrad, 1843 †
    1. Species Ecphora (Ecphora) asheri Petuch, 1988 † accepted as Ecphora (Powhatan) asheri Petuch, 1988 † represented as Ecphora asheri Petuch, 1988 †
    2. Species Ecphora (Ecphora) calvertensis Petuch, 1988 † accepted as Ecphora (Powhatan) calvertensis Petuch, 1988 † represented as Ecphora calvertensis Petuch, 1988 †
    3. Species Ecphora (Ecphora) choptankensis Petuch, 1988 † accepted as Planecphora choptankensis (Petuch, 1988) †
    4. Species Ecphora (Ecphora) floridana Petuch, 1989 † accepted as Globecphora floridana (Petuch, 1989) † (unaccepted > superseded combination)
    5. Species Ecphora (Ecphora) germonae Ward & Gilinsky, 1988 † accepted as Ecphora (Powhatan) germonae Ward & Gilinsky, 1988 † represented as Ecphora germonae Ward & Gilinsky, 1988 †
    6. Species Ecphora (Ecphora) hertweckorum Petuch, 1987 † accepted as Planecphora hertweckorum (Petuch, 1987) †
    7. Species Ecphora (Ecphora) hopei Petuch, 1991 † accepted as Ecphora whiteoakensis hopei Petuch, 1991 †
    8. Species Ecphora (Ecphora) mansfieldi Petuch, 1989 † accepted as Planecphora mansfieldi (Petuch, 1989) † (unaccepted > superseded combination)
    9. Species Ecphora (Ecphora) pachycostata Petuch, 1989 † accepted as Ecphora pachycostata Petuch, 1989 †
    10. Species Ecphora (Ecphora) pamlico D. Wilson, 1987 † accepted as Ecphorosycon pamlico (D. Wilson, 1987) † (unaccepted > superseded combination)
    11. Species Ecphora (Ecphora) rikeri Petuch, 1988 † accepted as Ecphora (Rhombecphora) rikeri Petuch, 1988 † represented as Ecphora rikeri Petuch, 1988 †
    12. Species Ecphora (Ecphora) striatula Petuch, 1986 † accepted as Ecphora (Ecphora) quadricostata striatula Petuch, 1986 † represented as Ecphora quadricostata striatula Petuch, 1986 †
    13. Species Ecphora (Ecphora) turneri Petuch, 1992 † accepted as Planecphora turneri (Petuch, 1992) †
    14. Species Ecphora (Ecphora) whiteoakensis Ward & Gilinsky, 1988 † accepted as Ecphora (Powhatan) whiteoakensis Ward & Gilinsky, 1988 † represented as Ecphora whiteoakensis Ward & Gilinsky, 1988 †
    15. Species Ecphora (Ecphora) williamsi Ward & Gilinsky, 1988 † accepted as Ecphora (Powhatan) williamsi Ward & Gilinsky, 1988 † represented as Ecphora williamsi Ward & Gilinsky, 1988 †
    16. Species Ecphora (Ecphora) amyae Petuch & Drolshagen, 2010 † represented as Ecphora amyae Petuch & Drolshagen, 2010 †
    17. Species Ecphora (Ecphora) chesapeakensis Petuch, 1992 † represented as Ecphora chesapeakensis Petuch, 1992 †
    18. Species Ecphora (Ecphora) gardnerae S. Wilson, 1987 † represented as Ecphora gardnerae S. Wilson, 1987 †
    19. Species Ecphora (Ecphora) kochi Ward & Gilinsky, 1988 † represented as Ecphora kochi Ward & Gilinsky, 1988 †
    20. Species Ecphora (Ecphora) leecreekensis Petuch, 1989 † represented as Ecphora leecreekensis Petuch, 1989 †
    21. Species Ecphora (Ecphora) mattinglyi Petuch, 2003 † represented as Ecphora mattinglyi Petuch, 2003 †
    22. Species Ecphora (Ecphora) meganae Ward & Gilinsky, 1988 † represented as Ecphora meganae Ward & Gilinsky, 1988 †
    23. Species Ecphora (Ecphora) quadricostata (Say, 1824) † represented as Ecphora quadricostata (Say, 1824) †
    24. Species Ecphora (Ecphora) roxaneae Petuch, 1991 † represented as Ecphora roxaneae Petuch, 1991 †
    25. Species Ecphora (Ecphora) sandgatesensis Petuch, 1989 † represented as Ecphora sandgatesensis Petuch, 1989 †
    26. Species Ecphora (Ecphora) wardi Petuch, 1989 † represented as Ecphora wardi Petuch, 1989 †
45. Subgenus Ecphora (Powhatan) Petuch & Berschauer, 2023 † represented as Ecphora Conrad, 1843 †
    1. Species Ecphora (Powhatan) asheri Petuch, 1988 † represented as Ecphora asheri Petuch, 1988 †
    2. Species Ecphora (Powhatan) calvertensis Petuch, 1988 † represented as Ecphora calvertensis Petuch, 1988 †
    3. Species Ecphora (Powhatan) chesapeakensis Petuch, 1992 † represented as Ecphora chesapeakensis Petuch, 1992 †
    4. Species Ecphora (Powhatan) conoyensis Petuch, 2003 † represented as Ecphora conoyensis Petuch, 2003 †
    5. Species Ecphora (Powhatan) gardnerae S. Wilson, 1987 † represented as Ecphora gardnerae S. Wilson, 1987 †
    6. Species Ecphora (Powhatan) germonae Ward & Gilinsky, 1988 † represented as Ecphora germonae Ward & Gilinsky, 1988 †
    7. Species Ecphora (Powhatan) grulkei Petuch & Berschauer, 2023 † represented as Ecphora grulkei Petuch & Berschauer, 2023 †
    8. Species Ecphora (Powhatan) pachycostata Petuch, 1989 † represented as Ecphora pachycostata Petuch, 1989 †
    9. Species Ecphora (Powhatan) whiteoakensis Ward & Gilinsky, 1988 † represented as Ecphora whiteoakensis Ward & Gilinsky, 1988 †
    10. Species Ecphora (Powhatan) williamsi Ward & Gilinsky, 1988 † represented as Ecphora williamsi Ward & Gilinsky, 1988 †
46. Subgenus Ecphora (Rhombecphora) Petuch & Berschauer, 2023 † represented as Ecphora Conrad, 1843 †
    1. Species Ecphora (Rhombecphora) harasewychi Petuch, 1989 † represented as Ecphora harasewychi Petuch, 1989 †
    2. Species Ecphora (Rhombecphora) rikeri Petuch, 1988 † represented as Ecphora rikeri Petuch, 1988 †

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