1. Genus Asketomorpha R. D. Hoare, Heaney & Mapes, 1989 †
   1. Species Asketomorpha grandis R. D. Hoare, Heaney & Mapes, 1989 †
2. Genus Cimitaria J. Hall, 1869 †
   1. Species Cimitaria angulata J. Hall, 1885 †
   2. Species Cimitaria guangxiensis R.-J. Zhang, 1977 †
   3. Species Cimitaria hendersoni (R. S. Allan, 1935) †
   4. Species Cimitaria liscina Kříž, 2008 †
   5. Species Cimitaria recurva (Conrad, 1842) †
   6. Species Cimitaria sinensis Pojeta, R.-J. Zhang & Z.-Y. Yang, 1986 †
   7. Species Cimitaria karsteni J. M. Clarke, 1899 † (uncertain > unassessed)
3. Genus Cuneamya J. Hall & Whitfield, 1875 †
   1. Species Cuneamya catilloides (Barrande, 1903) †
   2. Species Cuneamya elliptica S. A. Miller, 1881 †
   3. Species Cuneamya miamiensis J. Hall & Whitfield, 1875 †
   4. Species Cuneamya minuta H. Soot-Ryen & T. Soot-Ryen, 1960 †
   5. Species Cuneamya multistriata H. Soot-Ryen & T. Soot-Ryen, 1960 †
   6. Species Cuneamya scapha J. Hall & Whitfield, 1875 †
   7. Species Cuneamya yamansuensis Z.-R. Yang, 1983 †
   8. Species Cuneamya curta Whitfield, 1878 † (uncertain > unassessed)
   9. Species Cuneamya sulcodorsata Ulrich, 1892 † (uncertain > unassessed)
4. Genus Ectogrammysia R. D. Hoare, Heaney & Mapes, 1989 †
   1. Species Ectogrammysia crassatis R. D. Hoare, Heaney & Mapes, 1989 †
5. Genus Grammysia Verneuil, 1847 †
   1. Species Grammysia bisulcata (Conrad, 1838) †
   2. Species Grammysia circularis J. Hall, 1869 †
   3. Species Grammysia elliptica J. Hall & Whitfield, 1869 †
   4. Species Grammysia erecta J. Hall, 1869 †
   5. Species Grammysia magna J. Hall, 1869 †
   6. Species Grammysia nodosocostata J. Hall, 1869 †
   7. Species Grammysia toliensis Z.-R. Yang, 1983 †
   8. Subgenus Grammysia (Grammysioidea) H. S. Williams & Breger, 1916 † accepted as Grammysioidea H. S. Williams & Breger, 1916 † (unaccepted > superseded rank)
      1. Species Grammysia (Grammysioidea) princiana H. S. Williams & Breger, 1916 † accepted as Grammysioidea princiana (H. S. Williams & Breger, 1916) † (unaccepted > superseded combination)
   9. Subgenus Grammysia (Leptodomus) F. McCoy, 1844 † accepted as Leptodomus F. McCoy, 1844 † (unaccepted > superseded rank)
      1. Species Grammysia (Leptodomus) constricta J. Hall, 1870 † accepted as Myofossa constricta (J. Hall, 1870) † (unaccepted > superseded combination)
   10. Species Grammysia alveata (Conrad, 1841) † accepted as Grammysioidea alveata (Conrad, 1841) † (unaccepted > superseded combination)
   11. Species Grammysia arcuata (Conrad, 1841) † accepted as Grammysioidea arcuata (Conrad, 1841) † (unaccepted > superseded combination)
   12. Species Grammysia catilloides Barrande, 1903 † accepted as Cuneamya catilloides (Barrande, 1903) † (unaccepted > superseded combination)
   13. Species Grammysia chemungensis W. H. Pitt, 1874 † accepted as Grammysia elliptica J. Hall & Whitfield, 1869 † (unaccepted > junior subjective synonym)
   14. Species Grammysia communis J. Hall, 1885 † accepted as Grammysioidea communis (J. Hall, 1885) † (unaccepted > superseded combination)
   15. Species Grammysia duplicata J. Hall, 1885 † accepted as Grammysioidea duplicata (J. Hall, 1885) † (unaccepted > superseded combination)
   16. Species Grammysia hamiltonensis Verneuil, 1847 † accepted as Grammysia bisulcata (Conrad, 1838) † (unaccepted > junior subjective synonym)
   17. Species Grammysia hannibalensis (Shumard, 1855) † accepted as Grammysioidea hannibalensis (Shumard, 1855) † (unaccepted > superseded combination)
   18. Species Grammysia minor Walcott, 1884 † accepted as Grammysioidea minor (Walcott, 1884) † (unaccepted > superseded combination)
   19. Species Grammysia plena J. Hall, 1885 † accepted as Grammysioidea plena (J. Hall, 1885) † (unaccepted > superseded combination)
   20. Species Grammysia subarcuata J. Hall & Whitfield, 1869 † accepted as Grammysioidea subarcuata (J. Hall & Whitfield, 1869) † (unaccepted > superseded combination)
   21. Species Grammysia undata (J. Hall, 1883) † accepted as Grammysioidea undata (J. Hall, 1883) † (unaccepted > superseded combination)
   22. Species Grammysia dubia C. L. Fenton & M. A. Fenton, 1924 † (uncertain > unassessed)
   23. Species Grammysia glabra J. Hall, 1885 † (uncertain > unassessed)
   24. Species Grammysia lirata J. Hall, 1869 † (uncertain > unassessed)
   25. Species Grammysia obsoleta J. Hall, 1869 † (uncertain > unassessed)
   26. Species Grammysia ovata J. Hall, 1885 † (uncertain > unassessed)
   27. Species Grammysia teres Spriestersbach, 1915 † (uncertain > unassessed)
6. Genus Grammysioidea H. S. Williams & Breger, 1916 †
   1. Species Grammysioidea alveata (Conrad, 1841) †
   2. Species Grammysioidea arcuata (Conrad, 1841) †
   3. Species Grammysioidea capricornus (J. M. Clarke, 1913) †
   4. Species Grammysioidea communis (J. Hall, 1885) †
   5. Species Grammysioidea duplicata (J. Hall, 1885) †
   6. Species Grammysioidea hannibalensis (Shumard, 1855) †
   7. Species Grammysioidea minor (Walcott, 1884) †
   8. Species Grammysioidea plena (J. Hall, 1885) †
   9. Species Grammysioidea princiana (H. S. Williams & Breger, 1916) †
   10. Species Grammysioidea subarcuata (J. Hall & Whitfield, 1869) †
   11. Species Grammysioidea undata (J. Hall, 1883) †
7. Genus Paleodora C. A. Fleming, 1957 †
   1. Species Paleodora reeftonensis C. A. Fleming, 1957 †
   2. Species Paleodora tiaomajianensis R.-J. Zhang, 1977 † (uncertain > unassessed)
8. Genus Prothyris Meek, 1869 †
   1. Species Prothyris contorta Whidborne, 1896 †
   2. Species Prothyris elegans Meek, 1871 †
   3. Species Prothyris stubblefieldi R. B. Wilson, 1963 †
   4. Species Prothyris unioniformis Z.-R. Yang, 1983 †
   5. Subgenus Prothyris (Prothyris) Meek, 1869 † accepted as Prothyris Meek, 1869 † (subgenus not in use)
      1. Species Prothyris (Prothyris) unioniformis Z.-R. Yang, 1983 † accepted as Prothyris unioniformis Z.-R. Yang, 1983 † (subgenus not in use)
   6. Species Prothyris bergica Drevermann, 1902 † accepted as Prothyris contorta Whidborne, 1896 † (unaccepted > junior subjective synonym)
   7. Species Prothyris scalprata Whidborne, 1896 † accepted as Prothyris contorta Whidborne, 1896 † (subjective synonym)
   8. Species Prothyris recta Whidborne, 1896 † (uncertain > nomen dubium)
9. Genus Rhytimya Ulrich, 1894 †
   1. Species Rhytimya producta Ulrich, 1894 †
   2. Species Rhytimya compressa Ulrich, 1894 † (uncertain > unassessed)
   3. Species Rhytimya convexa Ulrich, 1894 † (uncertain > unassessed)
   4. Species Rhytimya oehana Ulrich, 1894 † (uncertain > unassessed)
   5. Species Rhytimya radiata Ulrich, 1894 † (uncertain > unassessed)
10. Genus Sedgwickia McCoy, 1844 †
    1. Species Sedgwickia attenuata McCoy, 1844 †
    2. Species Sedgwickia guangdongensis R.-J. Zhang, 1977 †
    3. Species Sedgwickia lianxianensis R.-J. Zhang, 1977 †
    4. Species Sedgwickia yingtangensis Pojeta, R.-J. Zhang & Z.-Y. Yang, 1986 †
    5. Subgenus Sedgwickia (Grammysia) Verneuil, 1847 † accepted as Grammysia Verneuil, 1847 † (unaccepted > superseded rank)
       1. Species Sedgwickia (Grammysia) neglecta Meek, 1872 † (uncertain > unassessed)
    6. Species Sedgwickia rostrata H. Schmidt, 1924 † accepted as Goniophora (Goniophora) rostrata (H. Schmidt, 1924) † (unaccepted > superseded combination)
    7. Species Sedgwickia compressa Meek, 1872 † (uncertain > unassessed)
    8. Species Sedgwickia fragilis Meek, 1872 † (uncertain > unassessed)
    9. Species Sedgwickia lunulata Whitfield, 1878 † (uncertain > unassessed)
    10. Species Sedgwickia subaequalis Mansuy, 1913 † (uncertain > unassessed)
    11. Species Sedgwickia subeiensis B.-D. Shi, 1983 † (uncertain > unassessed)
11. Genus Davidia Hicks, 1873 † accepted as Actinodonta Phillips, 1848 † (unaccepted > junior subjective synonym)
    1. Species Davidia ornata Hicks, 1873 † accepted as Actinodonta ramseyensis (Hicks, 1873) † (tentative subjective synonym)
    2. Species Davidia plana Hicks, 1873 † accepted as Actinodonta ramseyensis (Hicks, 1873) † (tentative subjective synonym)
12. Genus Grammisia [sic] † accepted as Grammysia Verneuil, 1847 † (unaccepted > misspelling - incorrect subsequent spelling)
    1. Species Grammisia armorica Munier-Chalmas, 1876 † (uncertain > unassessed)
    2. Species Grammisia hallei Munier-Chalmas, 1876 † (uncertain > unassessed)
    3. Species Grammisia lyelli Munier-Chalmas, 1876 † (uncertain > unassessed)
    4. Species Grammisia murchisoni Munier-Chalmas, 1876 † (uncertain > unassessed)
13. Genus Sedgewickia [sic] † accepted as Sedgwickia McCoy, 1844 † (unaccepted > misspelling - incorrect subsequent spelling)
    1. Species Sedgewickia lunulata Whitfield, 1879 † accepted as Sedgwickia lunulata Whitfield, 1878 † (unaccepted > misspelling - incorrect subsequent spelling, of genus)

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