Charactophyllum nanum (Hall & Whitfield, 1873) † (new combination reference)
Cyathophyllum rugosum (Hall, 1843) accepted as Prismatophyllum rugosum (Hall, 1843) † (additional source)
Cylindrophyllum Simpson, 1900 † (original description)
Cylindrophyllum elongatum Simpson, 1900 † (original description)
Ditoecholasma Simpson, 1900 † (original description)
Ditoecholasma fanningana (Safford, 1869) † (new combination reference)
Edaphophyllum Simpson, 1900 † (original description)
Edaphophyllum bipartitum (Hall, 18??) † (new combination reference)
Enterolasma Simpson, 1900 † (original description)
Enterolasma caliculum (Hall, 1852) † (new combination reference)
Enterolasma radicans (Hall, 1876) † (new combination reference)
Enterolasma strictum (Hall, 1874) † (new combination reference)
Enterolasma waynensis (Safford, 1869) † (new combination reference)
Hapsiphyllum Simpson, 1900 † (original description)
Hapsiphyllum calcariformis (Hall, 1882) † (new combination reference)
Homalophyllum Simpson, 1900 † (original description)
Homalophyllum herzeri (Hall, 1882) † (new combination reference)
Homalophyllum ungula (Röminger, 1876) † (new combination reference)
Kionelasma Simpson, 1900 † (original description)
Kionelasma gainesi (Davis, 1885) † (new combination reference)
Kionelasma mammiferum (Hall, 1882) † (new combination reference)
Kionelasma spongaxis (Röminger, 1876) † (new combination reference)
Laccophyllum Simpson, 1900 † (original description)
Laccophyllum acuminatum Simpson, 1900 † (original description)
Lopholasma Simpson, 1900 † (original description)
Lopholasma carinatum Simpson, 1900 † (original description)
Meniscophyllum Simpson, 1900 † (original description)
Odontophyllum Simpson, 1900 † (original description)
Odontophyllum convergens (Hall, 1882) † (new combination reference)
Placophyllum Simpson, 1900 † (original description)
Placophyllum tabulatum Simpson, 1900 † (original description)
Prismatophyllum Simpson, 1900 † (original description)
Prismatophyllum rugosum (Hall, 1843) † (new combination reference)
Scenophyllum Simpson, 1900 † (original description)
Scenophyllum conigera (Röminger, 1876) † (new combination reference)
Schoenophyllum Simpson, 1900 † (original description)
Schoenophyllum aggregatum Simpson, 1900 † (original description)
Stereolasma Simpson, 1900 † (original description)
Synaptophyllum Simpson, 1900 † (original description)
Synaptophyllum arundinaceum (Billings, 1859) † (new combination reference)
Synaptophyllum simcoense (Billings, 1859) † (new combination reference)
Synaptophyllum stramineum (Billings, 1859) † (new combination reference)
Triplophyllum Simpson, 1900 † (original description)
Triplophyllum centralis (Milne Edwards & Haime, 1851) † (new combination reference)
Triplophyllum terebrata (Hall, 1883) † (new combination reference)