abbreviatum, Loxonema abbreviatum de Koninck, 1881 † - syn of: Eoptychia abbreviata (de Koninck, 1881) † (FOSSIL)
absoluta, Stylonema absoluta (Goldfuss, 1844) † (FOSSIL)
acicularis, Loxonema acicularis Roemer, 1855 † (FOSSIL)
acuminata, Loxonema acuminata Perner, 1907 † - syn of: Loxonema sinuosa (Sowerby & Murchison, 1839) † (FOSSIL)
adpressa, Loxonema adpressa Phillips, 1841 † - syn of: Bensbergia elongata (Phillips, 1841) † (FOSSIL)
adventa, Omospira adventa Butts, 1926 † - syn of: Ectomaria adventa (Butts, 1926) † (FOSSIL)
alba, Katoptychia alba Perner, 1907 † (FOSSIL)
alexandra, Omospira alexandra (Billings, 1865) † (FOSSIL)
altera, Holopella altera Perner, 1903 † (FOSSIL)
altivolvis, Loxonema altivolvis Whiteaves, 1892 † - syn of: Bensbergia altivolvis (Whiteaves, 1892) † (FOSSIL)
amleri, Cookiloxa amleri Heidelberger, 2001 † (FOSSIL)
andinus, Tyrsoecus andinus Bonarelli, 1921 † (FOSSIL)
anglica, Australoxa anglica (D'Orbigny, 1850) † (FOSSIL)
annae, Loxonema annae Kittl, 1894 † (FOSSIL)
antiqua, Holopella antiqua Goldfuss, 1844 † - syn of: Palaeozygopleura antiqua (Goldfuss, 1844) † (FOSSIL)
arachne, Stylonema arachne Perner, 1907 † (FOSSIL)
arctecostata, Loxonema arctecostata Münster, 1841 † - syn of: Zygopleura arctecostata (Münster, 1841) † (FOSSIL)
aristerospira, Perneratia aristerospira Mawson & al., 2002 † (FOSSIL)
attenuata, Loxonema attenuata Lindström, 1884 † - syn of: Morania attenuata (Lindström, 1884) † (FOSSIL)
australis, Loxonema australis Chapman, 1916 † (FOSSIL)
batteni, Clathronema batteni Blodgett & Johnson, 1992 † (FOSSIL)
bella, Loxonema bella Walcott, 1884 † - syn of: Bellazona bella (Walcott, 1884) † (FOSSIL)
bellona, Loxonema bellona Hall, 1876 † (FOSSIL)
benevolum, Loxonema benevolum Perner, 1907 † (FOSSIL)
beraultensis, Loxonema beraultensis Barrande, 1907 † - syn of: Diplozone beraultensis (Barrande, 1907) † (FOSSIL)
beraunense, Loxonema beraunense Perner, 1903 † (FOSSIL)
bertiense, Loxonema bertiense Ruedemann, 1925 † (FOSSIL)
bongardia, Loxonema bongardia Heidelberger, 2001 † (FOSSIL)
boydii, Loxonema boydii Hall, 1843 † (FOSSIL)
broeggeri, Loxonema broeggeri Koken & Perner, 1925 † (FOSSIL)
cancellata, Clathronema cancellata (Cleland, 1911) † (FOSSIL)
cancellata, Clathronema cancellata (Goldfuss, 1844) † (FOSSIL)
cancellata, Rhabdostropha cancellata (Sowerby & Murchison, 1839) † (FOSSIL)
cancellata, Holopella cancellata de Sowerby & Murchison, 1839 † - syn of: Rhabdostropha cancellata (Sowerby & Murchison, 1839) † (FOSSIL)
cancellata, Loxonema cancellata Phillips, 1841 † (FOSSIL)
cancellata, Kjerulfonema cancellata Sowerby & Murchison, 1839 † - syn of: Rhabdostropha cancellata (Sowerby & Murchison, 1839) † (FOSSIL)
carinatum, Loxonema carinatum Kirchner, 1915 † (FOSSIL)
carinthiaca, Aulacostrepsis carinthiaca Jhaveri, 1969 † (FOSSIL)
cingulata, Clathronema cingulata (Whiteaves, 1892) † (FOSSIL)
cloughi, Clathronema cloughi Blodgett, 1992 † (FOSSIL)
coalescens, Stylonema coalescens Perner, 1907 † - syn of: Stylonema potens Perner, 1907 † (FOSSIL)
coapta, Loxonema coapta Hall, 1876 † (FOSSIL)
communis, Holopella communis Perner, 1903 † (FOSSIL)
commutatum, Stylonema commutatum Perner, 1907 † (FOSSIL)
conica, Loxonema conica Whidborne, 1891 † - syn of: Devonozyga conicum (Whidborne, 1891) † (FOSSIL)
conicum, Loxonema conicum Whidborne, 1891 † - syn of: Devonozyga conicum (Whidborne, 1891) † (FOSSIL)
constans, Loxonema constans Böhm, 1895 † (FOSSIL)
constricta, Loxonema constricta Sowerby, 1821 † - syn of: Microptychis constricta (Sowerby, 1821) † (FOSSIL)
contraria, Holopella contraria Perner, 1903 † (FOSSIL)
contrictum, Loxonema contrictum Böhm, 1895 † (FOSSIL)
cornubicum, Loxonema cornubicum Longstaff, 1909 † (FOSSIL)
cortii, Loxonema cortii Kittl, 1899 † (FOSSIL)
costata, Stylonema costata Sandberger, 1853 † - syn of: Stylonema hennahiana (Sedgwick & Murchison, 1840) † (FOSSIL)
costulatum, Loxonema costulatum Perner, 1907 † (FOSSIL)
crassa, Omospira trentonensis crassa Wilson (FOSSIL)
crispa, Loxonema crispa Lindström, 1884 † (FOSSIL)
crucianum, Loxonema crucianum Kittl, 1899 † (FOSSIL)
dalecarlicum, Loxonema dalecarlicum Angelin & Lindström, 1880 † (FOSSIL)
danai, Loxonema danai Clarke, 1904 † (FOSSIL)
debile, Loxonema debile Perner, 1903 † (FOSSIL)
deleta, Holopella deleta Perner, 1903 † (FOSSIL)
delicatula, Loxonema delicatula Wilson, 1938 † (FOSSIL)
delphicola, Loxonema delphicola Hall, 1860 † - syn of: Palaeozygopleura delphicola (Hall, 1860) † (FOSSIL)
deornatum, Loxonema deornatum de Koninck, 1881 † (FOSSIL)
depressa, Omospira depressa Longstaff, 1924 † (FOSSIL)
derelictum, Loxonema derelictum Perner, 1903 † (FOSSIL)
dextra, Holopella dextra Perner, 1903 † (FOSSIL)
dilatata, Stylonema dilatata Spitz, 1907 † (FOSSIL)
domesticum, Stylonema domesticum Perner, 1907 † (FOSSIL)
domina, Stylonema domina (Perner, 1903) † (FOSSIL)
dudleyense, Loxonema perneri dudleyense Longstaff (FOSSIL)
duplisulcata, Holopella duplisulcata Whidborne, 1889 † - syn of: Stylonema hennahiana (Sedgwick & Murchison, 1840) † (FOSSIL)
elegantissima, Loxonema elegantissima Yoo, 1988 † - syn of: Austronema elegantissima (Yoo, 1988) † (FOSSIL)
enantiomorpha, Katoptychia enantiomorpha (Frech, 1894) † (FOSSIL)
excavata, Girvania excavata Longst, 1924 † - syn of: Spiroecus excavatus Longst, 1924 † (FOSSIL)
excavatus, Spiroecus excavatus Longst, 1924 † (FOSSIL)
expandens, Holopella expandens Perner, 1903 † (FOSSIL)
falcifera, Loxonema falcifera Stoppani, 1857 † - syn of: Toxoconcha brocchi Stoppani, 1857 † (FOSSIL)
fasciatum, Loxonema fasciatum Lindström, 1884 † (FOSSIL)
fecundum, Loxonema fecundum de Koninck, 1881 † (FOSSIL)
fitchi, Loxonema fitchi Hall, 1859 † (FOSSIL)
fragillima, Loxonema fragillima Perner, 1907 † (FOSSIL)
fugitiva, Katoptychia fugitiva Perner, 1907 † (FOSSIL)
fusus, Loxonema fusus Stoppani, 1857 † - syn of: Omphaloptycha escheri (Hoernes, 1856) † (FOSSIL)
geinitziana, Loxonema geinitziana Geinitz, 1848 † - syn of: Turbonilla altenburgensis Geinitz, 1848 † (FOSSIL)
gigantea, Loxonema gigantea Webster, 1888 † - syn of: Westerna gigantea (Webster, 1888) † (FOSSIL)
girvanensis, Spiroecus girvanensis Longst, 1924 † (FOSSIL)
glabrum, Loxonema glabrum Clarke & Swartz, 1913 † - syn of: Palaeozygopleura glabra (Clarke & Swartz, 1913) † (FOSSIL)
gracilior, Holopella gracilior McCoy, 1851 † (FOSSIL)
gracillium, Loxonema gracillium Whiteaves, 1892 † - syn of: Alaskozygopleura gracillium (Whiteaves, 1892) † (FOSSIL)
grayianum, Loxonema grayianum Longst, 1909 † (FOSSIL)
gregaria, Loxonema gregaria Knod, 1908 † (FOSSIL)
gregarium, Loxonema gregarium (de Sowerby & Murchison, 1839) † (FOSSIL)
grignense, Loxonema grignense Kittl, 1899 † (FOSSIL)
grindrodii, Rhabdostropha grindrodii Donald, 1905 † (FOSSIL)
hallii, Katoptychia hallii (Whidborne, 1896) † (FOSSIL)
hamiltoniae, Loxonema hamiltoniae Hall, 1859 † - syn of: Palaeozygopleura hamiltoniae (Hall, 1859) † (FOSSIL)
haueri, Loxonema haueri Klipstein, 1843 † (FOSSIL)
heideckeri, Heideckernema heideckeri (Cook, 1997) † (FOSSIL)
hennahiana, Stylonema hennahiana (Sedgwick & Murchison, 1840) † (FOSSIL)
heteromorphum, Loxonema heteromorphum Gemmellaro, 1889 † (FOSSIL)
hibernicum, Loxonema hibernicum Longst, 1909 † (FOSSIL)
highlandense, Loxonema highlandense Clarke, 1909 † (FOSSIL)
holtedahli, Omospira holtedahli Yochelson, 1963 † (FOSSIL)
holynensis, Katoptychia holynensis Frýda & Bandel, 1997 † (FOSSIL)
hybrida, Loxonema hybrida Münster, 1841 † - syn of: Zygopleura hybrida (Münster, 1841) † (FOSSIL)
hybridum, Loxonema hybridum Münster, 1841 † - syn of: Zygopleura hybrida (Münster, 1841) † (FOSSIL)
hydraulica, Loxonema hydraulica Hall & Whitfield, 1872 † (FOSSIL)
incerta, Holopella incerta Spitz, 1907 † - syn of: Crassimarginata incerta (Spitz, 1907) † (FOSSIL)
inclytum, Loxonema inclytum Perner, 1907 † (FOSSIL)
inconspicuum, Loxonema inconspicuum Girty, 1909 † (FOSSIL)
inexpectatum, Loxonema inexpectatum Perner, 1903 † (FOSSIL)
infida, Holopella infida Perner, 1903 † - syn of: Straparollina infida (Perner, 1903) † (FOSSIL)
infrasilurica, Loxonema infrasilurica Koken & Perner, 1925 † (FOSSIL)
ingens, Nodoloxonema ingens (Frech, 1894) † (FOSSIL)
innotatum, Stylonema innotatum Perner, 1907 † (FOSSIL)
insociale, Loxonema insociale Kittl, 1894 † (FOSSIL)
intumescens, Loxonema intumescens Lindström, 1884 † (FOSSIL)
invariabile, Loxonema invariabile Kittl, 1894 † (FOSSIL)
jerseyense, Loxonema jerseyense Weller, 1903 † - syn of: Pragozyga jerseyense (Weller, 1903) † (FOSSIL)
jovialis, Holopella jovialis Perner, 1903 † (FOSSIL)
kasanensis, Loxonema kasanensis Netchaev, 1894 † - syn of: Arribazona kasanensis (Netchaev, 1894) † (FOSSIL)
kayseri, Loxonema kayseri Holzapfel, 1895 † (FOSSIL)
knighti, Loxonema knighti Yochelson, 1962 † - syn of: Pseudozygopleura knighti (Yochelson, 1962) † (FOSSIL)
kobelli, Loxonema kobelli Klipstein, 1843 † (FOSSIL)
kokeni, Loxonema kokeni (Kittl, 1894) † (FOSSIL)
laeve, Loxonema laeve Römer, 1850 † (FOSSIL)
laeviusculum, Loxonema laeviusculum Hall, 1879 † - syn of: Palaeozygopleura laeviusculum (Hall, 1879) † (FOSSIL)
lamellosa, Loxonema lamellosa Maxwell, 1961 † - syn of: Palaeozygopleura lamellosa (Maxwell, 1961) † (FOSSIL)
lamellosum, Loxonema lamellosum Maxwell, 1961 † - syn of: Palaeozygopleura lamellosa (Maxwell, 1961) † (FOSSIL)
lamellosus, Loxonema lamellosus Maxwell, 1961 † - syn of: Palaeozygopleura lamellosa (Maxwell, 1961) † (FOSSIL)
laticincta, Omospira laticincta Ulrich & Scofield, 1897 † (FOSSIL)
latisinuata, Rhabdostropha latisinuata Longst, 1924 † (FOSSIL)
latispira, Holopella latispira Grabau, 1936 † (FOSSIL)
laxa, Loxonema laxa Hall, 1879 † - syn of: Palaeozygopleura laxa (Hall, 1879) † (FOSSIL)
leda, Loxonema leda Hall, 1868 † (FOSSIL)
ledburiense, Loxonema ledburiense Longstaff, 1909 † (FOSSIL)
leijiatunensis, Rhabdostropha leijiatunensis Xi & Yu, 1990 † (FOSSIL)
leprosa, Loxonema leprosa Stoppani, 1857 † - syn of: Omphaloptycha aldrovandii (Stoppani, 1857) † (FOSSIL)
leunisseni, Cookiloxa leunisseni Heidelberger, 2007 † (FOSSIL)
leviusulcum, Loxonema leviusulcum de Koninck, 1881 † (FOSSIL)
libens, Loxonema libens Perner, 1907 † - syn of: Loxonema costulatum Perner, 1907 † (FOSSIL)
lindstroemi, Loxonema lindstroemi Longst, 1909 † (FOSSIL)
lophospiroides, Omospira lophospiroides Yü, 1961 † (FOSSIL)
magnificum, Nodoloxonema magnificum (Spitz, 1907) † (FOSSIL)
magnum, Loxonema magnum Whitfield, 1878 † (FOSSIL)
mater, Stylonema mater Perner, 1907 † (FOSSIL)
megaspirae, Loxonema megaspirae Karczewski, 1989 † (FOSSIL)
mersai, Loxonema mersai Kittl, 1894 † (FOSSIL)
minuta, Rhabdostropha minuta (Lindström, 1884) † (FOSSIL)
mira, Holopella mira Winchell, 1863 † (FOSSIL)
missouriensis, Loxonema missouriensis Williams, 1943 † - syn of: Palaeozygopleura missouriensis (Williams, 1943) † (FOSSIL)
modesta, Holopella modesta Perner, 1903 † (FOSSIL)
modestum, Stylonema modestum Perner, 1907 † (FOSSIL)
monile, Holopella monile McCoy † (FOSSIL)
moniliformis, Tyrsoecus moniliformis Bonarelli, 1921 † - syn of: Tyrsoecus andinus Bonarelli, 1921 † (FOSSIL)
multinodosa, Tyrsoecus multinodosa Yin & Yochelson, 1983 † (FOSSIL)
multiplicatum, Loxonema multiplicatum Clarke, 1904 † - syn of: Palaeozygopleura multiplicata (Clarke, 1904) † (FOSSIL)
multiplicatum, Loxonema multiplicatum Römer, 1850 † - syn of: Devonozyga multiplicata (Römer, 1850) † (FOSSIL)
murrayana, Loxonema murrayana Salter, 1859 † (FOSSIL)
neptunis, Loxonema neptunis Kittl, 1894 † (FOSSIL)
nexile, Loxonema nexile Sedgwick & Murchison, 1840 † - syn of: Palaeozygopleura nexile (Sedgwick & Murchison, 1840) † (FOSSIL)
nidhoeggi, Spiroecus nidhoeggi McNamara, 1978 † (FOSSIL)
ningxiaensis, Loxonema ningxiaensis Pan, 1997 † (FOSSIL)
nitida, Loxonema nitida Longst, 1924 † (FOSSIL)
nitidula, Loxonema nitidula Meek & Worthen, 1860 † - syn of: Soleniscus typicus Meek & Worthen, 1860 † (FOSSIL)
noe, Loxonema noe Clarke, 1885 † - syn of: Palaeozygopleura noe (Clarke, 1885) † (FOSSIL)
obliquearcuatum, Loxonema obliquearcuatum Sandberger & Sandberger, 1855 † - syn of: Palaeozygopleura obliquearcuatum (Sandberger, 1855) † (FOSSIL)
obliquecostata, Loxonema obliquecostata Bronn, 1841 † - syn of: Kittliconcha obliquecostata (Bronn, 1841) † (FOSSIL)
obscura, Rhabdostropha obscura (Donald, 1902) † (FOSSIL)
obsoleta, Loxonema obsoleta (de Sowerby & Murchison, 1839) † (FOSSIL)
obtusus, Tyrsoecus obtusus Haas, 1953 † (FOSSIL)
oligospira, Loxonema oligospira Winchell, 1863 † - syn of: Leptoptygma oligospira (Winchell, 1863) † (FOSSIL)
oppositum, Stylonema oppositum Perner, 1907 † (FOSSIL)
orientalis, Omospira orientalis Donald, 1906 † - syn of: Ectomaria orientalis (Donald, 1906) † (FOSSIL)
ornamentaria, Loxonema ornamentaria Netchaev, 1894 † - syn of: Stephanozyga ornamentaria (Netchaev, 1894) † (FOSSIL)
ovatum, Loxonema ovatum Römer, 1850 † - syn of: Macrochilina ovatum (Römer, 1850) † (FOSSIL)
parva, Loxonema parva Whitfield, 1882 † - syn of: Palaeozygopleura parvula (Whitfield, 1882) † (FOSSIL)
parvula, Stylonema parvula Frýda & Bandel, 1997 † (FOSSIL)
parvula, Loxonema parvula Perner, 1903 † (FOSSIL)
parvula, Holopella parvula Perner, 1903 † (FOSSIL)
paucicostatum, Loxonema paucicostatum Kirchner, 1915 † (FOSSIL)
peramplum, Stylonema peramplum Perner, 1907 † (FOSSIL)
perarmatus, Tyrsoecus perarmatus Bonarelli, 1921 † - syn of: Tyrsoecus andinus Bonarelli, 1921 † (FOSSIL)
perlonga, Loxonema perlonga Perner, 1907 † (FOSSIL)
permiana, Loxonema permiana Beede, 1907 † - syn of: Streptacis permiana (Beede, 1907) † (FOSSIL)
perneri, Loxonema perneri Longstaff, 1909 † (FOSSIL)
perneri dudleyense, Loxonema perneri dudleyense Longstaff, 1909 † (FOSSIL)
pexata, Loxonema pexata Hall, 1861 † - syn of: Palaeozygopleura hamiltoniae (Hall, 1859) † (FOSSIL)
philipii, Loxonema philipii Gruber, 1932 † (FOSSIL)
phillipsii, Loxonema phillipsii Römer, 1843 † - syn of: Decorochilina phillipsii (Römer, 1843) † (FOSSIL)
pikensis, Loxonema pikensis Hyde, 1953 † (FOSSIL)
piligera, Holopella piligera Sandberger & Sandberger, 1855 † - syn of: Palaeozygopleura piligera (Sandberger & Sandberger, 1855) † (FOSSIL)
placidum, Stylonema placidum Perner, 1907 † (FOSSIL)
plana, Omospira trentonensis plana Wilson (FOSSIL)
planatum, Loxonema planatum Longstaff, 1909 † (FOSSIL)
plasi, Loxonema plasi Horný, 1953 † (FOSSIL)
plicatissimum, Loxonema plicatissimum Gemmellaro, 1889 † (FOSSIL)
plusquelleci, Nodoloxonema plusquelleci Blodgett & al., 1999 † (FOSSIL)
pollens, Loxonema pollens Perner, 1903 † (FOSSIL)
polonica, Loxonema polonica Gürich, 1896 † (FOSSIL)
postremum, Loxonema postremum Hall, 1883 † (FOSSIL)
potens, Stylonema potens Perner, 1907 † (FOSSIL)
praecedens, Loxonema praecedens Perner, 1903 † (FOSSIL)
praeteritum, Loxonema praeteritum Longst, 1909 † (FOSSIL)
primitiva, Rhabdostropha primitiva Longst, 1924 † (FOSSIL)
prisca, Loxonema prisca Münster, 1840 † - syn of: Mesocoelia priscum (Münster, 1840) † (FOSSIL)
priscum, Loxonema priscum Münster, 1840 † - syn of: Mesocoelia priscum (Münster, 1840) † (FOSSIL)
propinquum, Loxonema propinquum Perner, 1907 † (FOSSIL)
pseudofasciatum, Loxonema pseudofasciatum Donald, 1905 † (FOSSIL)
pseudomorphum, Loxonema pseudomorphum Gemmellaro, 1889 † (FOSSIL)
pulchella, Loxonema pulchella Stoppani, 1857 † - syn of: Omphaloptycha escheri (Hoernes, 1856) † (FOSSIL)
pulchra, Cookiloxa pulchra Frýda, 2000 † (FOSSIL)
pupoideum, Loxonema pupoideum Gemmellaro, 1889 † (FOSSIL)
quinquecincta, Rhabdostropha quinquecincta (Kjerulf, 1865) † (FOSSIL)
rarecostatum, Loxonema rarecostatum Böhm, 1895 † (FOSSIL)
rectangulare, Loxonema rectangulare Spitz, 1907 † (FOSSIL)
reedi, Loxonema reedi Longstaff, 1909 † (FOSSIL)
regularis, Holopella regularis Lindström, 1884 † (FOSSIL)
renellaeformis, Loxonema renellaeformis Römer, 1843 † (FOSSIL)
rennoni, Stylonema rennoni Heidelberger, 2001 † (FOSSIL)
reticulata, Clathronema reticulata (Phillips, 1841) † (FOSSIL)
robusta, Stylonema robusta (Hall, 1859) † (FOSSIL)
roemeri, Loxonema roemeri Kayser, 1878 † - syn of: Palaeozygopleura roemeri (Kayser, 1878) † (FOSSIL)
roessleri, Loxonema roessleri Geinitz, 1852 † - syn of: Chemnitzia roessleri (Geinitz, 1852) † (FOSSIL)
rude, Loxonema rude Perner, 1903 † (FOSSIL)
rugiferum, Loxonema rugiferum Phillips, 1836 † - syn of: Stephanozyga rugifera (Phillips, 1836) † (FOSSIL)
ruginosum, Nodoloxonema ruginosum (de Koninck, 1881) † (FOSSIL)
rugosa, Loxonema rugosa Meek & Worthen, 1860 † - syn of: Pseudozygopleura scitula (Meek & Worthen, 1860) † (FOSSIL)
rugosum, Loxonema rugosum Billings, 1857 † (FOSSIL)
salomonense, Loxonema salomonense Gemmellaro, 1889 † (FOSSIL)
scalaraeforme, Loxonema scalaraeforme Holzapfel, 1882 † - syn of: Devonozyga scalariaeforme (Holzapfel, 1882) † (FOSSIL)
scalarioideum, Loxonema scalarioideum (Phillips, 1836) † (FOSSIL)
scalaroides, Loxonema scalaroides Whidborne, 1889 † - syn of: Spanionema scalaroides (Whidborne, 1889) † (FOSSIL)
scitula, Loxonema scitula Meek & Worthen, 1860 † - syn of: Pseudozygopleura scitula (Meek & Worthen, 1860) † (FOSSIL)
scitulum, Loxonema scitulum Meek & Worthen, 1860 † - syn of: Pseudozygopleura scitula (Meek & Worthen, 1860) † (FOSSIL)
sellai, Loxonema sellai Kittl, 1899 † (FOSSIL)
septentrionale, Loxonema septentrionale Koken & Perner, 1925 † (FOSSIL)
sicula, Loxonema sicula Hall, 1879 † - syn of: Palaeozygopleura sicula (Hall, 1879) † (FOSSIL)
simplex, Aulacostrepsis simplex Perner, 1907 † (FOSSIL)
sinuosa, Loxonema sinuosa (Sowerby & Murchison, 1839) † (FOSSIL)
solida, Loxonema solida Hall, 1859 † (FOSSIL)
solitarium, Stylonema solitarium Perner, 1907 † (FOSSIL)
solvens, Loxonema solvens Perner, 1907 † (FOSSIL)
spurium, Loxonema spurium de Koninck, 1881 † (FOSSIL)
stokei, Rhabdostropha stokei Longst, 1909 † (FOSSIL)
strangulatum, Loxonema strangulatum Lindström, 1884 † (FOSSIL)
striatissimum, Loxonema striatissimum Reed, 1897 † (FOSSIL)
striatus, Clathronema striatus (d'Eichwald, 1860) † (FOSSIL)
strigillata, Loxonema strigillata Stoppani, 1857 † - syn of: Toxoconcha brocchi Stoppani, 1857 † (FOSSIL)
sturi, Loxonema sturi Böhm, 1895 † - syn of: Loxonema insociale Kittl, 1894 † (FOSSIL)
styliola, Loxonema styliola Hall, 1876 † - syn of: Palaeozygopleura styliola (Hall, 1876) † (FOSSIL)
styliolum, Loxonema styliolum Hall, 1876 † - syn of: Palaeozygopleura styliola (Hall, 1876) † (FOSSIL)
styloideum, Stylonema styloideum Perner, 1907 † (FOSSIL)
stylum, Loxonema stylum Tolmachoff, 1930 † (FOSSIL)
subangulatum, Loxonema subangulatum Öpik, 1953 † (FOSSIL)
subattenuata, Loxonema subattenuata Hall, 1859 † (FOSSIL)
subconvexa, Loxonema subconvexa Yü, 1961 † (FOSSIL)
subgracilis, Loxonema subgracilis Netschajew, 1894 † - syn of: Streptacis subgracilis (Netschajew, 1894) † (FOSSIL)
subtilistriata, Loxonema subtilistriata Oehlert, 1877 † - syn of: Pragozyga subtilistriata (Oehlert, 1877) † (FOSSIL)
subulata, Loxonema subulata Römer, 1843 † (FOSSIL)
subvariabile, Loxonema subvariabile Kittl, 1899 † (FOSSIL)
sulcatum, Loxonema sulcatum de Koninck, 1881 † - syn of: Eoptychia sulcata (de Koninck, 1881) † (FOSSIL)
swedenborgiana, Loxonema swedenborgiana King, 1850 † - syn of: Chemnitzia roessleri (Geinitz, 1852) † (FOSSIL)
tasselli, Australoxa tasselli Cook & Camilleri, 1997 † (FOSSIL)
tenera, Holopella tenera Perner, 1903 † (FOSSIL)
tenuicincta, Holopella tenuicincta McCoy † (FOSSIL)
tenuireticulata, Stylonema tenuireticulata Whidborne, 1891 † - syn of: Stylonema hennahiana (Sedgwick & Murchison, 1840) † (FOSSIL)
tenuis, Loxonema tenuis Münster, 1841 † - syn of: Ampezzopleura tenuis (Münster, 1841) † (FOSSIL)
tenuisulcata, Holopella tenuisulcata Sandberger & Sandberger, 1854 † - syn of: Palaeozygopleura tenuisulcata (Sandberger & Sandberger, 1854) † (FOSSIL)
tenuisulcatum, Loxonema tenuisulcatum Sandberger & Sandberger, 1854 † - syn of: Palaeozygopleura tenuisulcata (Sandberger & Sandberger, 1854) † (FOSSIL)
terebra, Loxonema terebra Hall, 1879 † - syn of: Palaeozygopleura terebra (Hall, 1879) † (FOSSIL)
teres, Stylonema teres Hall, 1876 † - syn of: Stylonema robusta (Hall, 1859) † (FOSSIL)
teres, Holopella teres Lindström, 1884 † (FOSSIL)
torquatum, Loxonema torquatum Perner, 1907 † (FOSSIL)
transiens, Stylonema transiens Perner, 1907 † (FOSSIL)
transmutans, Stephanocosmia transmutans Kittl, 1899 † (FOSSIL)
trentonensis, Omospira trentonensis Ulrich & Scofield, 1897 † (FOSSIL)
trentonensis crassa, Omospira trentonensis crassa Wilson, 1951 † (FOSSIL)
trentonensis plana, Omospira trentonensis plana Wilson, 1951 † (FOSSIL)
trimorpha, Holopella trimorpha Waagen, 1880 † (FOSSIL)
trochleatum, Stylonema trochleatum (Münster, 1840) † (FOSSIL)
turritelliformis, Loxonema turritelliformis Klipstein, 1843 † (FOSSIL)
tzwetaevi, Loxonema tzwetaevi Gemmellaro, 1889 † (FOSSIL)
vagrans, Loxonema vagrans Wilson, 1938 † (FOSSIL)
varicosum, Loxonema varicosum Gemmellaro, 1889 † (FOSSIL)
vincta, Loxonema vincta Hall, 1856 † - syn of: Murchisonia vincta (Hall, 1856) † (FOSSIL)
walcotti, Loxonema walcotti Blodgett & Johnson, 1992 † (FOSSIL)
walmstedti, Loxonema walmstedti Klipstein, 1843 † - syn of: Zygopleura walmstedti (Klipstein, 1843) † (FOSSIL)
welleriana, Loxonema welleriana Weller, 1903 † - syn of: Pragozyga jerseyense (Weller, 1903) † (FOSSIL)
wetzlariana, Loxonema wetzlariana Heidelberger, 2001 † (FOSSIL)
winnipegense, Loxonema winnipegense Whiteaves, 1893 † (FOSSIL)
wortheni, Loxonema wortheni Weller, 1916 † - syn of: Palaeozygopleura wortheni (Weller, 1916) † (FOSSIL)
yandellana, Loxonema yandellana Hall, 1856 † - syn of: Pseudozygopleura yandellana (Hall, 1856) † (FOSSIL)
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