Acanthoscapha Ulrich & Bassler, 1923 † (basis of record)
Acanthoscapha (Acanthoscapha) navicula (Ulrich, 1891) † represented as Acanthoscapha navicula (Ulrich, 1891) † (basis of record)
Acanthoscapha cristata (Ulrich, 1891) † accepted as Beecherella cristata Ulrich, 1891 † (new combination reference)
Acanthoscapha navicula (Ulrich, 1891) † (basis of record)
Acanthoscapha ovata (Ulrich, 1891) † (new combination reference)
Acanthoscapha subtumida (Ulrich, 1891) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Acanthoscapha subtumida intermedia (Ulrich, 1891) † accepted as  † (new combination reference)
Acanthoscapha subtumida subtumida (Ulrich, 1891) † accepted as  † (new combination reference)
Acratia deloi Geis, 1932 † (basis of record)
Acratia magna Delo, 1930 † (basis of record)
Acratia typica Delo, 1930 † (basis of record)
Acronotella Ulrich & Bassler, 1923 † (basis of record)
Acronotella depressa Peneau, 1928 † (basis of record)
Acronotella shideleri Ulrich & Bassler, 1923 † (basis of record)
Aechmina abnormis Ulrich, 1891 † accepted as Paraechmina abnormis (Ulrich, 1891) † (basis of record)
Aechmina bovina Jones, 1887 † (basis of record)
Aechmina bovina bovina Jones, 1887 † (basis of record)
Aechmina bovina punctata Krause, 1892 † accepted as Aechmina punctata (Krause, 1892) † (basis of record)
Aechmina brevicornis Jones, 1887 † (basis of record)
Aechmina byrnesi (Miller, 1874) † accepted as Dicranella byrnesi (Miller, 1874) † (basis of record)
Aechmina carbonifera Smith, 1911 † (basis of record)
Aechmina clavulus Jones & Holl, 1869 † (basis of record)
Aechmina cuspidata Jones & Holl, 1869 † (basis of record)
Aechmina depressicornis Jones, 1887 † (basis of record)
Aechmina geneae Roth, 1929 † (basis of record)
Aechmina gibberosa Knight, 1928 † accepted as Cyathus gibberosus (Knight, 1928) † accepted as Ardmorea gibberosa (Knight, 1928) † (basis of record)
Aechmina punctata (Krause, 1892) † (basis of record)
Amphissites centronotus transversus (Roth, 1929) Bassler & Kellett, 1934 † (new combination reference)
Amphissites costatus (Roth, 1929) Bassler & Kellett, 1934 † (new combination reference)
Amphissites geneae (Roth, 1929) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Amphissites geni (Roth, 1929) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Amphissites grapta (Keyserling, 1854) Bassler & Kellett, 1934 † accepted as Amphissites graptus (Keyserling, 1854) Bassler & Kellett, 1934 † (new combination reference)
Amphissites graptus (Keyserling, 1854) Bassler & Kellett, 1934 † (new combination reference)
Amphissites lindahli (Ulrich, 1891) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Amphissites mesocostus (Roth, 1929) Bassler & Kellett, 1934 † (new combination reference)
Amphissites minutus (Roth, 1929) Bassler & Kellett, 1934 † (new combination reference)
Amphissites oblongus (Jones & Kirkby, 1885) Bassler & Kellett, 1934 † accepted as Shleesha oblonga (Jones & Kirkby, 1885) Robinson, 1978 † (new combination reference)
Amphissites oblongus oblongus (Jones & Kirkby, 1885) Bassler & Kellett, 1934 † accepted as Shleesha oblonga oblonga (Jones & Kirkby, 1885) Robinson, 1978 † (new combination reference)
Amphissites oblongus transversus (Girty, 1910) Bassler & Kellett, 1934 † accepted as Shleesha oblonga transversa (Girty, 1910) † (additional source)
Amphissites parallelus (Ulrich, 1891) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Amphissites permianus (Jones & Kirkby, 1886) Bassler & Kellett, 1934 † (new combination reference)
Amphissites primaevus (Roth, 1929) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Amphissites reflexus (Girty, 1910) Bassler & Kellett, 1934 † accepted as Coronakirkbya reflexa (Girty, 1910) † (new combination reference)
Amphissites reticulosa (Jones & Kirkby, 1886) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Amphissites reticulosus (Jones & Kirkby, 1886) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Amphissites retiferus (Roth, 1929) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Amphissites semimuralis Bassler & Kellett, 1934 † (original description)
Amphissites simplex (Girty, 1910) Bassler & Kellett, 1934 † (new combination reference)
Amphissites simplexus (Roth, 1929) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Amphissites simplus (Roth, 1929) Bassler & Kellett, 1934 † (new combination reference)
Amphissites sticta (Keyserling, 1854) Bassler & Kellett, 1934 † accepted as Amphissites stictus (Keyserling, 1854) Bassler & Kellett, 1934 † (new combination reference)
Amphissites stictus (Keyserling, 1854) Bassler & Kellett, 1934 † (new combination reference)
Amphissites umbonatus (Eichwald, 1857) Bassler & Kellett, 1934 † (new combination reference)
Aparchites canaliculatus (Krause, 1892) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Aparchites grandis (Jones, 1887) Bassler & Kellett, 1934 † (new combination reference)
Aparchites lenticularis (Jones & Holl, 1869) Jones, 1889 † accepted as Primitia lenticularis Jones & Holl, 1869 † (additional source)
Aparchites seneca (Hall, 1862) Bassler & Kellett, 1934 † (new combination reference)
Aparchites sinuatus (Hall, 1860) Bassler & Kellett, 1934 † (new combination reference)
Aparchites subovatus Jones, 1893 † (additional source)
Aparchites subtruncatus Jones, 1893 † (additional source)
Apatochilina plana tuberculata (Krause, 1892) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Bairdia arcuata (M'Coy, 1844) Bassler & Kellett, 1934 † (new combination reference)
Bairdia berniciensis (Kirkby, 1858) Bassler & Kellett, 1934 † accepted as Cryptobairdia berniciensis (Kirkby, 1858) † (new combination reference)
Bairdia brevicauda (Jones, 1859) Bassler & Kellett, 1934 † (new combination reference)
Bairdia caudata (Kirkby, 1859) Bassler & Kellett, 1934 † (new combination reference)
Bairdia cuneata (Steusloff, 1894) Kummerow, 1924 † accepted as  † (additional source)
Bairdianella occidentalis (Girty, 1909) Bassler & Kellett, 1934 † (new combination reference)
Bairdianella rostrata (Knight, 1928) Bassler & Kellett, 1934 † accepted as Basslerella rostrata (Knight, 1928) Cooper, 1946 † (new combination reference)
Barychilina rhomboidea (Jones, 1890) Ulrich, 1891 † (additional source)
Barychilina walcotti (Jones, 1890) Ulrich, 1891 † accepted as Barychilina walcotti (Jones, 1890) Bassler & Kellett, 1934 † (additional source)
Barychilina walcotti (Jones, 1890) Bassler & Kellett, 1934 † (new combination reference)
Beecherella navicula Ulrich, 1891 † accepted as Acanthoscapha navicula (Ulrich, 1891) † (basis of record)
Beecherella ovata Ulrich, 1891 † (basis of record)
Beecherella subtumida Ulrich, 1891 † accepted as  † (basis of record)
Beyrichia (Beyrichia) bicuspis (Kiesow, 1888) Bassler & Kellett, 1934 † (new combination reference)
Beyrichia (Zygobolba) interrupta (Jones, 1887) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Beyrichia acadica (Jones, 1889) Bassler & Kellett, 1934 † accepted as  † (new combination reference)
Beyrichia antiquata (Jones, 1855) Bassler & Kellett, 1934 † (new combination reference)
Beyrichia atlantica (Billings, 1865) Bassler & Kellett, 1934 † (new combination reference)
Beyrichia bicuspis (Kiesow, 1888) Bassler & Kellett, 1934 † (new combination reference)
Beyrichia brasiliensis (Clarke, 1900) Bassler & Kellett, 1934 † (new combination reference)
Beyrichia clathrata Jones, 1858 † accepted as  † (additional source)
Beyrichia comma Jones, 1880 † (new combination reference)
Beyrichia dagon (Clarke, 1885) Bassler & Kellett, 1934 † (new combination reference)
Beyrichia elegans Boll, 1862 † accepted as  † (additional source)
Beyrichia granulata (Jones, 1886) Bassler & Kellett, 1934 † (new combination reference)
Beyrichia impendens Jones, 1869 † accepted as Beyrichia impendens impendens Jones, 1869 † (additional source)
Beyrichia impendens impendens Jones, 1869 † (additional source)
Beyrichia infecta (Jones, 1893) Bassler & Kellett, 1934 † (new combination reference)
Beyrichia intermedia subspissa (Jones & Holl, 1886) Bassler & Kellett, 1934 † (new combination reference)
Beyrichia lithofactor White & St. John, 1867 † (additional source)
Beyrichia lithofactor lithofactor White & St. John, 1867 † (additional source)
Beyrichia lithofactor velata White & St. John, 1867 † (additional source)
Beyrichia longispina Jones & Kirkby, 1886 † accepted as Hollinella longispina (Jones & Kirkby, 1886) Moore, 1929 † (additional source)
Beyrichia muldensis Chapman, 1901 † (additional source)
Beyrichia nana Broegger, 1882 † accepted as  † (additional source)
Beyrichia nanella Moberg & Segerberg, 1906 † accepted as  † (additional source)
Beyrichia nuda (Jones, 1855) Bassler & Kellett, 1934 † (new combination reference)
Beyrichia occidentalis (Walcott, 1864) † accepted as Arikloedenia occidentalis (Walcott, 1884) † (new combination reference)
Beyrichia pauperata (Jones & Holl, 1886) Bassler & Kellett, 1934 † (new combination reference)