1. Genus Conchothyra F. W. Hutton, 1877 †
   1. Species Conchothyra australis (P. Marshall, 1916) †
   2. Species Conchothyra marshalli (Trechmann, 1917) †
   3. Species Conchothyra parasitica F. W. Hutton, 1877 †
   4. Species Conchothyra expedita H. J. Finlay & Marwick, 1937 † accepted as Conchothyra australis (P. Marshall, 1916) † (junior subjective synonym)
2. Genus Monalaria Marwick, 1924 †
   1. Species Monalaria concinna (Suter, 1917) †
   2. Species Monalaria filata Marwick, 1960 †
   3. Species Monalaria gracilis H. J. Finlay & Marwick, 1937 †
      1. Subspecies Monalaria gracilis filata Marwick, 1960 † accepted as Monalaria filata Marwick, 1960 † (superseded combination)
   4. Species Monalaria poliveta Stilwell, 2001 †
3. Genus Pelicaria Gray, 1857
   1. Species Pelicaria arahura Beu, 2010 †
   2. Species Pelicaria canaliculata (Zittel, 1865) †
      1. Subspecies Pelicaria canaliculata becki Neef, 1970 † accepted as Pelicaria canaliculata (Zittel, 1865) † (junior subjective synonym)
   3. Species Pelicaria cestata Marwick, 1965 †
   4. Species Pelicaria clarki (Neef, 1970) †
   5. Species Pelicaria granttaylori Beu, 2010 †
   6. Species Pelicaria lacera (Marwick, 1931) †
   7. Species Pelicaria marima (Neef, 1970) †
   8. Species Pelicaria monilifera (Suter, 1914) †
   9. Species Pelicaria nana (Marwick, 1926) †
   10. Species Pelicaria parva (Suter, 1915) †
   11. Species Pelicaria procanalis Beu, 1970 †
   12. Species Pelicaria pseudovermis (Bartrum & A. W. B. Powell, 1928) †
   13. Species Pelicaria rugosa (Marwick, 1924) †
   14. Species Pelicaria vermis (Martyn, 1784)
       1. Subspecies Pelicaria vermis bradleyi (Neef, 1970) accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
       2. Subspecies Pelicaria vermis flemingi (Neef, 1970) accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
       3. Subspecies Pelicaria vermis grahami (Neef, 1970) accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
       4. Subspecies Pelicaria vermis powelli (Neef, 1970) accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
       5. Subspecies Pelicaria vermis vermis (Martyn, 1784) accepted as Pelicaria vermis (Martyn, 1784) (superseded combination)
   15. Species Pelicaria zelandiae (P. Marshall & Murdoch, 1920) †
   16. Species Pelicaria acuminata (Marwick, 1924) † accepted as Pelicaria vermis (Martyn, 1784) (synonym)
   17. Species Pelicaria clathrata Tate, 1885 † accepted as Tylospira clathrata (Tate, 1885) †
   18. Species Pelicaria convexa (Marwick, 1924) † accepted as Pelicaria vermis (Martyn, 1784) (synonym)
   19. Species Pelicaria coronata Tate, 1885 † accepted as Tylospira coronata (Tate, 1885) †
   20. Species Pelicaria fossa (Marwick, 1924) † accepted as Pelicaria vermis (Martyn, 1784) (synonym)
   21. Species Pelicaria howchini Cotton, 1934 † accepted as Tylospira howchini (Cotton, 1934) † (unaccepted > junior subjective synonym)
   22. Species Pelicaria incrassata (A. W. B. Powell, 1931) † accepted as Struthiolaria incrassata A. W. B. Powell, 1931 † (superseded combination)
   23. Species Pelicaria mangaoparia Vella, 1953 † accepted as Pelicaria acuminata (Marwick, 1924) † (junior subjective synonym)
   24. Species Pelicaria marwicki H. J. Finlay, 1931 † accepted as Tylospira marwicki (H. J. Finlay, 1931) † (unaccepted > superseded combination)
   25. Species Pelicaria rotunda Vella, 1953 † accepted as Pelicaria acuminata (Marwick, 1924) † (junior subjective synonym)
4. Genus Perissodonta E. von Martens, 1878
   1. Species Perissodonta ameghinoi (Ihering, 1897) †
   2. Species Perissodonta austerocallosa (Stilwell, Zinsmeister & Oleinik, 2004) †
   3. Species Perissodonta chilensis (R. A. Philippi, 1887) †
   4. Species Perissodonta ellioti (Zinsmeister, 1976) †
   5. Species Perissodonta georgiana Strebel, 1908
   6. Species Perissodonta laevis (Wilckens, 1910) †
   7. Species Perissodonta mcmurdoensis (Stilwell, 2000) †
   8. Species Perissodonta minor (P. Marshall, 1917) †
   9. Species Perissodonta mirabilis (E. A. Smith, 1875)
      1. Variety Perissodonta mirabilis var. georgiana Strebel, 1908 accepted as Perissodonta georgiana Strebel, 1908
   10. Species Perissodonta mortoni Marwick, 1960 †
   11. Species Perissodonta nordenskjoeldi (Wilckens, 1910) †
   12. Species Perissodonta ornata (G. B. Sowerby I, 1846) †
   13. Species Perissodonta shackeltoni (Zinsmeister, 1980) †
   14. Species Perissodonta steinmanni (Stilwell & Zinsmeister, 1992) †
   15. Species Perissodonta variabilis (Wilckens, 1910) †
5. Genus Struthiolaria Lamarck, 1816
   1. Species Struthiolaria arthritica Bartrum & A. W. B. Powell, 1928 †
   2. Species Struthiolaria calcar F. W. Hutton, 1886 †
   3. Species Struthiolaria callosa Marwick, 1924 †
   4. Species Struthiolaria cincta F. W. Hutton, 1873 †
   5. Species Struthiolaria cingulata Zittel, 1865 †
      1. Subspecies Struthiolaria cingulata monilifera Suter, 1914 † accepted as Pelicaria monilifera (Suter, 1914) † (superseded combination)
   6. Species Struthiolaria errata Marwick, 1924 †
   7. Species Struthiolaria firthi Marwick, 1948 †
   8. Species Struthiolaria frazeri F. W. Hutton, 1885 †
   9. Species Struthiolaria illepida Bartrum & A. W. B. Powell, 1928 †
   10. Species Struthiolaria incrassata A. W. B. Powell, 1931 †
   11. Species Struthiolaria lawsi A. W. B. Powell & Bartrum, 1929 †
   12. Species Struthiolaria nexa Marwick, 1931 †
   13. Species Struthiolaria obesa F. W. Hutton, 1885 †
   14. Species Struthiolaria otaioica Laws, 1935 †
   15. Species Struthiolaria papulosa (Martyn, 1784)
   16. Species Struthiolaria praenuntia Marwick, 1926 †
   17. Species Struthiolaria prior Finlay, 1926 †
   18. Species Struthiolaria spinifera Marwick, 1924 †
   19. Species Struthiolaria spinosa F. W. Hutton, 1885 †
   20. Species Struthiolaria tuberculata F. W. Hutton, 1873 †
       1. Subspecies Struthiolaria tuberculata concinna Suter, 1917 † accepted as Monalaria concinna (Suter, 1917) † (superseded combination)
   21. Subgenus Struthiolaria (Pelicaria) Gray, 1857 accepted as Pelicaria Gray, 1857
       1. Species Struthiolaria (Pelicaria) clarki Neef, 1970 † accepted as Pelicaria clarki (Neef, 1970) †
       2. Species Struthiolaria (Pelicaria) incrassata A. W. B. Powell, 1931 † accepted as Struthiolaria incrassata A. W. B. Powell, 1931 † (superseded combination)
       3. Species Struthiolaria (Pelicaria) lacera Marwick, 1931 accepted as Pelicaria lacera (Marwick, 1931) †
       4. Species Struthiolaria (Pelicaria) marima Neef, 1970 † accepted as Pelicaria marima (Neef, 1970) †
       5. Species Struthiolaria (Pelicaria) vermis (Martyn, 1784) accepted as Pelicaria vermis (Martyn, 1784) (superseded combination)
          1. Subspecies Struthiolaria (Pelicaria) vermis bradleyi Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
          2. Subspecies Struthiolaria (Pelicaria) vermis flemingi Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
          3. Subspecies Struthiolaria (Pelicaria) vermis grahami Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
          4. Subspecies Struthiolaria (Pelicaria) vermis powelli Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
          5. Subspecies Struthiolaria (Pelicaria) vermis vellae Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
       6. Species Struthiolaria (Pelicaria) wellmani Neef, 1970 † accepted as Pelicaria acuminata (Marwick, 1924) † (junior subjective synonym)
   22. Species Struthiolaria acuminata Marwick, 1924 † accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
   23. Species Struthiolaria ameghinoi Ihering, 1897 † accepted as Perissodonta ameghinoi (Ihering, 1897) † (unaccepted > superseded combination)
   24. Species Struthiolaria armata Marwick, 1924 † accepted as Struthiolaria (Callusaria) callosa Marwick, 1924 † (junior subjective synonym)
   25. Species Struthiolaria canaliculata Zittel, 1865 † accepted as Pelicaria canaliculata (Zittel, 1865) † (superseded combination)
   26. Species Struthiolaria chilensis R. A. Philippi, 1887 † accepted as Perissodonta chilensis (R. A. Philippi, 1887) † (unaccepted > superseded combination)
   27. Species Struthiolaria concinna Suter, 1917 † accepted as Monalaria concinna (Suter, 1917) † (superseded combination)
   28. Species Struthiolaria convexa Marwick, 1924 † accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
   29. Species Struthiolaria crenulata Lamarck, 1822 accepted as Pelicaria vermis (Martyn, 1784) (junior objective synonym)
   30. Species Struthiolaria dolorosa L. C. King, 1934 † accepted as Struthiolaria cingulata Zittel, 1865 † (junior subjective synonym)
   31. Species Struthiolaria fortis Marwick, 1924 † accepted as Struthiolaria (Callusaria) callosa Marwick, 1924 † (junior subjective synonym)
   32. Species Struthiolaria fossa Marwick, 1924 † accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
   33. Species Struthiolaria gigas G. B. Sowerby II, 1842 accepted as Struthiolaria papulosa (Martyn, 1784) (junior subjective synonym)
   34. Species Struthiolaria inermis G. B. Sowerby I, 1821 accepted as Pelicaria vermis (Martyn, 1784) (junior objective synonym)
   35. Species Struthiolaria lacera Marwick, 1931 † accepted as Pelicaria lacera (Marwick, 1931) †
   36. Species Struthiolaria lirata Tate, 1889 † accepted as Tylospira lirata (Tate, 1889) †
   37. Species Struthiolaria media Marwick, 1924 † accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
   38. Species Struthiolaria minor P. Marshall, 1917 † accepted as Perissodonta minor (P. Marshall, 1917) † (superseded combination)
   39. Species Struthiolaria mirabilis E. A. Smith, 1875 accepted as Perissodonta mirabilis (E. A. Smith, 1875) (original combination)
   40. Species Struthiolaria nana Marwick, 1926 † accepted as Pelicaria nana (Marwick, 1926) † (superseded combination)
   41. Species Struthiolaria nodosa Gray, 1835 accepted as Struthiolaria papulosa (Martyn, 1784) (misspelling of nodulosa Lamarck, 1816)
   42. Species Struthiolaria nodulosa Lamarck, 1816 accepted as Struthiolaria papulosa (Martyn, 1784) (junior subjective synonym)
   43. Species Struthiolaria ornata G. B. Sowerby I, 1846 † accepted as Perissodonta ornata (G. B. Sowerby I, 1846) † (unaccepted > superseded combination)
       1. Variety Struthiolaria ornata var. densestriata Ihering, 1897 † (uncertain > unassessed)
   44. Species Struthiolaria papillaris J. E. Gray, 1857 accepted as Struthiolaria papulosa (Martyn, 1784) (unaccepted > junior subjective synonym)
   45. Species Struthiolaria parva Suter, 1915 † accepted as Pelicaria parva (Suter, 1915) † (superseded combination)
   46. Species Struthiolaria prima Defrance, 1827 † accepted as Popenoeum primum (Defrance, 1827) † (original combination)
   47. Species Struthiolaria pseudovermis Bartrum & A. W. B. Powell, 1928 † accepted as Pelicaria pseudovermis (Bartrum & A. W. B. Powell, 1928) † (superseded combination)
   48. Species Struthiolaria rugosa Marwick, 1924 † accepted as Pelicaria rugosa (Marwick, 1924) † (superseded combination)
   49. Species Struthiolaria scutulata Gmelin, 1791 accepted as Tylospira scutulata (Gmelin, 1791)
   50. Species Struthiolaria senex F. W. Hutton, 1873 † accepted as Galeodea senex (F. W. Hutton, 1873) † (superseded combination)
   51. Species Struthiolaria subspinosa Marwick, 1924 † accepted as Struthiolaria (Struthiolaria) calcar F. W. Hutton, 1886 † (junior subjective synonym)
   52. Species Struthiolaria sulcata Jonas, 1839 accepted as Struthiolaria papulosa (Martyn, 1784) (junior subjective synonym)
   53. Species Struthiolaria tasmani L. C. King, 1933 † accepted as Struthiolaria papulosa (Martyn, 1784) (junior subjective synonym)
   54. Species Struthiolaria tricarinata Lesson, 1841 accepted as Pelicaria vermis (Martyn, 1784) (junior objective synonym)
   55. Species Struthiolaria vermis (Martyn, 1784) accepted as Pelicaria vermis (Martyn, 1784) (superseded combination)
       1. Subspecies Struthiolaria vermis bradleyi Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
       2. Subspecies Struthiolaria vermis flemingi Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
       3. Subspecies Struthiolaria vermis grahami Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
       4. Subspecies Struthiolaria vermis powelli Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
       5. Subspecies Struthiolaria vermis vellai Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
       6. Subspecies Struthiolaria vermis wellmani Neef, 1970 accepted as Pelicaria vermis (Martyn, 1784) (junior subjective synonym)
   56. Species Struthiolaria zelandiae P. Marshall & Murdoch, 1920 † accepted as Pelicaria zelandiae (P. Marshall & Murdoch, 1920) † (superseded combination)
   57. Subgenus Struthiolaria (Callusaria) Finlay, 1926 † represented as Struthiolaria Lamarck, 1816
       1. Species Struthiolaria (Callusaria) arthritica Bartrum & A. W. B. Powell, 1928 † represented as Struthiolaria arthritica Bartrum & A. W. B. Powell, 1928 †
       2. Species Struthiolaria (Callusaria) callosa Marwick, 1924 † represented as Struthiolaria callosa Marwick, 1924 †
       3. Species Struthiolaria (Callusaria) obesa F. W. Hutton, 1885 † represented as Struthiolaria obesa F. W. Hutton, 1885 †
       4. Species Struthiolaria (Callusaria) otaioica Laws, 1935 † represented as Struthiolaria otaioica Laws, 1935 †
       5. Species Struthiolaria (Callusaria) spinifera Marwick, 1924 † represented as Struthiolaria spinifera Marwick, 1924 †
       6. Species Struthiolaria (Callusaria) spinosa F. W. Hutton, 1885 † represented as Struthiolaria spinosa F. W. Hutton, 1885 †
       7. Species Struthiolaria (Callusaria) tuberculata F. W. Hutton, 1873 † represented as Struthiolaria tuberculata F. W. Hutton, 1873 †
   58. Subgenus Struthiolaria (Struthiolaria) Lamarck, 1816 represented as Struthiolaria Lamarck, 1816
       1. Species Struthiolaria (Struthiolaria) calcar F. W. Hutton, 1886 † represented as Struthiolaria calcar F. W. Hutton, 1886 †
       2. Species Struthiolaria (Struthiolaria) cincta F. W. Hutton, 1873 † represented as Struthiolaria cincta F. W. Hutton, 1873 †
       3. Species Struthiolaria (Struthiolaria) cingulata Zittel, 1865 † represented as Struthiolaria cingulata Zittel, 1865 †
       4. Species Struthiolaria (Struthiolaria) dolorosa L. C. King, 1934 † represented as Struthiolaria dolorosa L. C. King, 1934 †
       5. Species Struthiolaria (Struthiolaria) errata Marwick, 1924 † represented as Struthiolaria errata Marwick, 1924 †
       6. Species Struthiolaria (Struthiolaria) firthi Marwick, 1948 † represented as Struthiolaria firthi Marwick, 1948 †
       7. Species Struthiolaria (Struthiolaria) frazeri F. W. Hutton, 1885 † represented as Struthiolaria frazeri F. W. Hutton, 1885 †
       8. Species Struthiolaria (Struthiolaria) illepida Bartrum & A. W. B. Powell, 1928 † represented as Struthiolaria illepida Bartrum & A. W. B. Powell, 1928 †
       9. Species Struthiolaria (Struthiolaria) lawsi A. W. B. Powell & Bartrum, 1929 † represented as Struthiolaria lawsi A. W. B. Powell & Bartrum, 1929 †
       10. Species Struthiolaria (Struthiolaria) nexa Marwick, 1931 † represented as Struthiolaria nexa Marwick, 1931 †
       11. Species Struthiolaria (Struthiolaria) papulosa (Martyn, 1784) represented as Struthiolaria papulosa (Martyn, 1784)
       12. Species Struthiolaria (Struthiolaria) praenuntia Marwick, 1926 † represented as Struthiolaria praenuntia Marwick, 1926 †
       13. Species Struthiolaria (Struthiolaria) prior Finlay, 1926 † represented as Struthiolaria prior Finlay, 1926 †
   59. Species Struthiolaria guttifera Grzybowski, 1899 † (uncertain > unassessed)
   60. Species Struthiolaria hatcheri Ortmann, 1899 † (uncertain > unassessed)
   61. Species Struthiolaria oblita G. B. Sowerby I, 1825 (uncertain > taxon inquirendum, use in recent liteature currently undocumented)
6. Genus Tylospira G. F. Harris, 1897
   1. Species Tylospira clathrata (Tate, 1885) †
   2. Species Tylospira coronata (Tate, 1885) †
   3. Species Tylospira gilli Marwick, 1960 †
   4. Species Tylospira glomerata Darragh, 1991 †
   5. Species Tylospira incilata Darragh, 1991 †
   6. Species Tylospira lirata (Tate, 1889) †
   7. Species Tylospira marwicki (H. J. Finlay, 1931) †
   8. Species Tylospira pagodiformis Ludbrook, 1978 †
   9. Species Tylospira puteana Darragh, 1991 †
   10. Species Tylospira scutulata (Gmelin, 1791)
   11. Subgenus Tylospira (Singletonaria) Marwick, 1952 accepted as Tylospira G. F. Harris, 1897 (unaccepted > junior subjective synonym)
       1. Species Tylospira (Singletonaria) gilli Marwick, 1960 † accepted as Tylospira gilli Marwick, 1960 † (unaccepted > superseded combination)
   12. Species Tylospira howchini (Cotton, 1934) † accepted as Tylospira marwicki (H. J. Finlay, 1931) † (unaccepted > junior subjective synonym)
7. Genus Antarctodarwinella Zinsmeister, 1976 † accepted as Perissodonta E. von Martens, 1878
   1. Species Antarctodarwinella austerocallosa Stilwell, Zinsmeister & Oleinik, 2004 † accepted as Perissodonta austerocallosa (Stilwell, Zinsmeister & Oleinik, 2004) †
   2. Species Antarctodarwinella ellioti Zinsmeister, 1976 † accepted as Perissodonta ellioti (Zinsmeister, 1976) †
8. Genus Singletonaria Marwick, 1952 † accepted as Tylospira G. F. Harris, 1897 (junior subjective synonym)
9. Genus Struthiolarella Steinmann & Wilckens, 1908 † accepted as Perissodonta E. von Martens, 1878
   1. Species Struthiolarella mcmurdoensis Stilwell, 2000 † accepted as Perissodonta mcmurdoensis (Stilwell, 2000) †
   2. Species Struthiolarella nordenskjoeldi Wilckens, 1910 † accepted as Perissodonta nordenskjoeldi (Wilckens, 1910) †
   3. Species Struthiolarella nordenskjoldi Wilckens, 1910 † accepted as Perissodonta nordenskjoeldi (Wilckens, 1910) †
   4. Species Struthiolarella shackeltoni Zinsmeister & Camacho, 1980 † accepted as Perissodonta shackeltoni (Zinsmeister, 1980) †
   5. Species Struthiolarella steinmanni Stilwell & Zinsmeister, 1992 † accepted as Perissodonta steinmanni (Stilwell & Zinsmeister, 1992) †
   6. Species Struthiolarella variabilis Wilckens, 1910 † accepted as Perissodonta variabilis (Wilckens, 1910) †
      1. Variety Struthiolarella variabilis var. laevis Wilckens, 1910 †

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