Amphissites adjunctio Cooper, 1946 † accepted as Kegelites adjunctio (Cooper, 1946) Sohn, 1961 † (original description)
Amphissites carinatus Cooper, 1946 † (original description)
Amphissites congruens Cooper, 1946 † (original description)
Amphissites parvus Cooper, 1946 † (original description)
Amphissites pinguis (Ulrich & Bassler, 1906) Knight, 1928 † accepted as Ectodemites pinguis (Ulrich & Bassler, 1906) Costanzo & Kae, 1987 † (new combination reference)
Amphissites robustus Cooper, 1946 † (original description)
Amphissites robustus robustus Cooper, 1946 † (original description)
Amphissites transversus (Roth, 1929) Cooper, 1946 † accepted as  † (new combination reference)
Bairdia (Fabalicypris) Cooper, 1946 † accepted as Fabalicypris Cooper, 1946 † (original description)
Bairdia acuminata Cooper, 1946 † (original description)
Bairdia concava Cooper, 1946 † (original description)
Bairdia crassimarginata Cooper, 1946 † (original description)
Bairdia demissa Cooper, 1946 † (original description)
Bairdia dissimilis Cooper, 1946 † (original description)
Bairdia harltoni Cooper, 1946 † (original description)
Bairdia monstrabilis Cooper, 1946 † (original description)
Bairdia regularis Cooper, 1946 † accepted as Bairdiacypris regularis (Cooper, 1946) † (original description)
Bairdia spinosa Cooper, 1946 † (original description)
Bairdia symmetrica Cooper, 1946 † accepted as Rectobairdia symmetrica (Cooper, 1946) † (original description)
Bairdiacypris acuminata Cooper, 1946 † (original description)
Bairdiacypris ardua Cooper, 1946 † (original description)
Bairdiacypris haydenbranchensis (Payne, 1937) Cooper, 1946 † (new combination reference)
Bairdiacypris nebraskensis (Upson, 1933) Cooper, 1946 † (new combination reference)
Bairdiacypris shideleri (Delo, 1930) Cooper, 1946 † accepted as Fabalicypris shideleri (Delo, 1930) † (new combination reference)
Bairdiacypris trojana (Wilson, 1933) Cooper, 1946 † (new combination reference)
Basslerella acuminata Cooper, 1946 † (original description)
Basslerella lacrimosa Cooper, 1946 † (original description)
Basslerella ovata Cooper, 1946 † (original description)
Basslerella parallela Cooper, 1946 † (original description)
Basslerella rostrata (Knight, 1928) Cooper, 1946 † (new combination reference)
Bythocypris disparilis Cooper, 1946 † accepted as Pseudobythocypris disparilis (Cooper, 1946) Shaver, 1958 † (original description)
Bythocypris quadrata Cooper, 1946 † (original description)
Cavellina cavellinoides (Bradfield, 1935) Cooper, 1946 † (new combination reference)
Cavellina daubeana (Bradfield, 1935) Cooper, 1946 † (new combination reference)
Cavellina footei (Coryell & Booth, 1933) Cooper, 1946 † (new combination reference)
Cavellina laevis (Bradfield, 1935) Cooper, 1946 † (new combination reference)
Cavellina lirata (Bradfield, 1935) Cooper, 1946 † (new combination reference)
Cavellina ovoidiformis (Harlton, 1928) Cooper, 1946 † (new combination reference)
Cavellina rotunda Cooper, 1946 † accepted as Sulcella rotunda (Cooper, 1946) Lethiers & Colin, 1989 † (original description)
Cavellina symmetrica (Payne, 1937) Cooper, 1946 † (new combination reference)
Cavellina tongia (Coryell & Sample, 1932) Cooper, 1946 † (new combination reference)
Chamishaella exigua (Cooper, 1946) Kotschetkova, 1983 † (original description)
Coryellites centralis (Coryell & Billings, 1932) Cooper, 1946 † accepted as Pseudobythocypris centralis (Coryell & Billings, 1932) Kotschetkova & J, 1979 † (new combination reference)
Coryellites contracta Cooper, 1946 † accepted as Pseudobythocypris contracta (Cooper, 1946) Shaver, 1958 † (original description)
Coryellites cooki (Bradfield, 1935) Cooper, 1946 † accepted as  † (new combination reference)
Coryellites elongata Cooper, 1946 † (original description)
Coryellites johnsoni (Upson, 1933) Cooper, 1946 † accepted as  † (new combination reference)
Coryellites lowelli Cooper, 1946 † accepted as Pseudobythocypris lowelli (Cooper, 1946) Shaver, 1958 † (original description)
Coryellites mytiliformis (Bradfield, 1935) Cooper, 1946 † accepted as  † (new combination reference)
Coryellites ovata Cooper, 1946 † (original description)
Coryellites palopintoensis (Coryell & Sample, 1932) Cooper, 1946 † (new combination reference)
Coryellites parallela (Knight, 1928) Cooper, 1946 † accepted as  † (new combination reference)
Coryellites pediformis (Knight, 1928) Cooper, 1946 † accepted as  † (new combination reference)
Coryellites scotti Cooper, 1946 † accepted as Pseudobythocypris scotti (Cooper, 1946) Shaver, 1958 † (original description)
Coryellites simillima (Bradfield, 1935) † (new combination reference)
Coryellites subelliptica (Upson, 1933) † (new combination reference)
Coryellites texensis (Coryell & Sample, 1932) Cooper, 1946 † accepted as Pseudobythocypris texensis (Coryell & Sample, 1932) Shaver, 1958 † (new combination reference)
Coryellites tomlinsonella Cooper, 1946 † (original description)
Cyathus striatus Cooper, 1946 † (original description)
Discoidella lingulata Cooper, 1946 † (original description)
Discoidella perminuta (Kellett, 1933) Cooper, 1946 † accepted as  † (new combination reference)
Ectodemites dattonensis (Harlton, 1927) Cooper, 1946 † accepted as Kegelites dattonensis (Harlton, 1927) Sohn, 1961 † (new combination reference)
Ectodemites edsonae (Bradfield, 1935) Cooper, 1946 † (new combination reference)
Ectodemites geneae (Roth, 1929) Cooper, 1946 † accepted as  † (new combination reference)
Ectodemites harltoni Cooper, 1946 † accepted as Kegelites harltoni (Cooper, 1946) Sohn, 1961 † (original description)
Ectodemites pinguis (Ulrich & Bassler, 1906) Costanzo & Kae, 1987 † (new combination reference)
Ectodemites plummeri Cooper, 1946 † accepted as Ectodemites plummeri (Cooper, 1946) Sohn, 1961 † (original description)
Ectodemites sullivanensis (Payne, 1937) Cooper, 1946 † accepted as  † (new combination reference)
Ellipsella bradfieldi Cooper, 1946 † (original description)
Fabalicypris Cooper, 1946 † (original description)
Fabalicypris acuminata Cooper, 1946 † (original description)
Fabalicypris dispar Cooper, 1946 † (original description)
Fabalicypris minuta Cooper, 1946 † (original description)
Fabalicypris plana Cooper, 1946 † (original description)
Fabalicypris regularis Cooper, 1946 † (original description)
Fabalicypris tenuis Cooper, 1946 † (original description)
Fabalicypris wetumkaensis Cooper, 1946 † (original description)
Fabalicypris wileyensis Cooper, 1946 † accepted as Bairdia (Fabalicypris) wileyensis (Cooper, 1946) Gorak, 1967 † (original description)
Geisina gallowayi (Bradfield, 1935) Cooper, 1946 † (new combination reference)
Geisina jolliffina Cooper, 1946 † (original description)
Geisina warthini Cooper, 1946 † (original description)
Glyptopleurina bolliaformis (Ulrich & Bassler, 1906) Ershova, 1969 † (new combination reference)
Hastifaba Cooper, 1946 † (original description)
Hastifaba pervulgata Cooper, 1946 † (original description)
Hastifaba robusta Cooper, 1946 † (original description)
Hastifaba spinosa Cooper, 1946 † (original description)
Healdia asper Cooper, 1946 † (original description)
Healdia aspinosa Cooper, 1946 † (original description)
Healdia bicornis Cooper, 1946 † (original description)
Healdia carinata Cooper, 1946 † (original description)
Healdia fabalis Cooper, 1946 † (original description)
Healdia granosa Cooper, 1946 † (original description)
Healdia longula Cooper, 1946 † (original description)
Healdia longula longula Cooper, 1946 † (original description)
Healdia rectis Cooper, 1946 † (original description)
Healdia spinosa Cooper, 1946 † (original description)
Healdia usitata Cooper, 1946 † (original description)
Healdiacypris acuminata Cooper, 1946 † (original description)
Healdiacypris acuminatus Cooper, 1946 † accepted as Healdiacypris acuminata Cooper, 1946 † (original description)
Hollinella (Hollinella) warthini Cooper, 1946 † represented as Hollinella warthini Cooper, 1946 † (original description)