Cheilotoma Koken, 1889 † accepted as Cheilotomona Strand, 1928 †
Holopella McCoy, 1851 †
Holopella antiqua (Münster, 1840) †
Holopella gracilior McCoy, 1851 †
Holopella intermedia McCoy, 1851 † (uncertain > unassessed )
Holopella lineata (Münster, 1840) † (uncertain > taxon inquirendum )
Holopella monile McCoy, 1851 † (uncertain > unassessed )
Loxonema Phillips, 1841 †
Loxonema (Stylonema) Perner, 1907 † accepted as Stylonema Perner, 1907 †
Loxonema (Stylonema) potens Perner, 1907 † accepted as Stylonema potens Perner, 1907 †
Loxonema absoluta (Goldfuss, 1844) † accepted as Stylonema absoluta (Goldfuss, 1844) †
Loxonema attenuata (Stevens, 1858) † (uncertain > unassessed )
Loxonema attenuata var. semicostata Meek, 1871 † accepted as Pseudozygopleura semicostatum (Meek, 1871) †
Loxonema babbinboonensis Etheridge, 1907 †
Loxonema bella Walcott, 1884 † accepted as Bellazona bella (Walcott, 1884) †
Loxonema brevis McCoy, 1844 † (uncertain > unassessed )
Loxonema cancellata (J. De C. Sowerby, 1839) † (uncertain > taxon inquirendum )
Loxonema conica (J. De C. Sowerby, 1839) † (uncertain > taxon inquirendum )
Loxonema difficile Sardeson, 1902 † accepted as Palaeozygopleura difficile (Sardeson, 1902) †
Loxonema elegans McCoy, 1851 † (uncertain > unassessed )
Loxonema elegantissima Yoo, 1988 †
Loxonema gregaria (J. De C. Sowerby, 1839) †
Loxonema impendens McCoy, 1844 † (uncertain > unassessed )
Loxonema ingens Frech, 1894 † accepted as Nodoloxonema ingens (Frech, 1894) †
Loxonema kasanensis Netchaev, 1894 † accepted as Arribazona kasanensis (Netchaev, 1894) †
Loxonema lamellosa W. G. H. Maxwell, 1961 †
Loxonema magnificum Spitz, 1907 † accepted as Nodoloxonema magnificum (Spitz, 1907) †
Loxonema microphanula X.-D. Qiao, 1983 † (uncertain > unassessed )
Loxonema ornamentaria Netchaev, 1894 † accepted as Stephanozyga ornamentaria (Netchaev, 1894) †
Loxonema parva Stauffer & Schroyer, 1920 † accepted as Anthracopupa parva (Stauffer & Schroyer, 1920) †
Loxonema permiana Beede, 1907 † accepted as Streptacis permiana (Beede, 1907) †
Loxonema planoverticum Netchaev, 1894 † accepted as Palaeostylus planoverticum (Netchaev, 1894) †
Loxonema polygyra McCoy, 1844 † (uncertain > unassessed )
Loxonema pulcherrima McCoy, 1844 † (uncertain > unassessed )
Loxonema retrostriatum Kirchner, 1915 † accepted as Palaeozygopleura retrostriatum (Kirchner, 1915) †
Loxonema semicostatum Meek, 1871 † accepted as Pseudozygopleura semicostatum (Meek, 1871) †
Loxonema sinuosa (J. de Sowerby, 1839) †
Loxonema subgracilis Netchaev, 1894 † accepted as Streptacis subgracilis (Netchaev, 1894) †
Loxonema subobsoleta A. d'Orbigny, 1850 † accepted as Stylonema absoluta (Goldfuss, 1844) †
Loxonema sulcatula McCoy, 1844 † (uncertain > unassessed )
Loxonema teres (Münster, 1842) † (uncertain > taxon inquirendum )
Loxonema turrita McCoy, 1844 † (uncertain > unassessed )
Microptychis Longstaff, 1912 †
Microptychis permiana Batten, 1985 †
Microptychis wrighti Longstaff, 1912 † (uncertain > unassessed )
Nodoloxonema Blodgett, Fryda & Racheboeuf, 1999 †
Nodoloxonema ingens (Frech, 1894) †
Nodoloxonema magnificum (Spitz, 1907) †
Nodoloxonema plusquelleci Blodgett, Fryda & Racheboeuf, 1999 †
Pleurotrochus Grabau, 1910 † accepted as Microdoma Meek & Worthen, 1866 †
Stylonema Perner, 1907 †
Stylonema absoluta (Goldfuss, 1844) †
Stylonema potens Perner, 1907 †
Stylonema trochleatum (Münster, 1840) †