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 superseded combination)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 superseded combination)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 superseded combination)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 †

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