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abbreviata, Lophospira abbreviata Hall, 1847 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
aberrans, Ruedemannia aberrans (Perner, 1903) † (FOSSIL)
abnormis, Lophospira abnormis Ulrich & Scofield, 1897 † (FOSSIL)
acuminata, Lophospira acuminata Ulrich & Scofield, 1897 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
acuta, Lophospira acuta Grabau, 1922 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
acutocarinata, Lophospira acutocarinata Twenhofel, 1928 † - syn of: Paupospira tropidophora (Meek, 1873) † (FOSSIL)
adelina, Ectomaria adelina (Billings, 1865) † (FOSSIL)
adventa, Ectomaria adventa (Butts, 1926) † (FOSSIL)
aista, Ruedemannia aista Koken, 1896 † - syn of: Ruedemannia lirata (Ulrich & Scofield, 1897) † (FOSSIL)
akpatokensis, Paupospira akpatokensis (Wilson, 1939) † (FOSSIL)
alata, Lophospira alata Koken & Perner, 1925 † (FOSSIL)
alternans, Lophospira alternans Koken & Perner, 1925 † (FOSSIL)
alticarinata, Worthenia alticarinata Batten, 1989 † (FOSSIL)
altispiralis, Gyronema altispiralis Grabau, 1922 † (FOSSIL)
altisulcatum, Proturritella altisulcatum Hudson, 1905 † - syn of: Proturritella historicum Hudson, 1905 † (FOSSIL)
ampla, Lophospira ampla Ulrich & Scofield, 1897 † - syn of: Paupospira tropidophora (Meek, 1873) † (FOSSIL)
angulata, Worthenia angulata (Münster, 1841) † (FOSSIL)
angulata, Lophospira angulata Butts, 1926 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
angulata, Lophospira angulata de Sowerby & Murchison, 1839 † - syn of: Lophospira ventricosa (Hall, 1847) † (FOSSIL)
angulata, Longstaffia angulata Pitcher, 1939 † - syn of: Longstaffia centervillensis Foerste, 1923 † (FOSSIL)
angulocincta, Pagodispira angulocincta Salter, 1859 † - syn of: Donaldiella cicelia (Billings, 1865) † (FOSSIL)
angulocincta, Donaldiella angulocincta Salter, 1859 † - syn of: Donaldiella cicelia (Billings, 1865) † (FOSSIL)
angulosum, Gonionema angulosum Koken, 1897 † - syn of: Proturritella bicarinata (Wahlenberg, 1821) † (FOSSIL)
aojii, Lophospira aojii Endo, 1932 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
apunctata, Worthenia apunctata Kittl, 1894 † (FOSSIL)
arctica, Lophospira arctica Tolmachoff, 1930 † - syn of: Murchisonia arctica (Tolmachoff, 1930) † (FOSSIL)
arizonensis, Worthenia arizonensis Winters, 1963 † (FOSSIL)
arizonica, Worthenia arizonica Winters, 1963 † - syn of: Worthenia arizonensis Winters, 1963 † (FOSSIL)
armata, Eunema armata Goldfuss, 1832 † - syn of: Pseudoplagiothyra armatus (Goldfuss, 1832) † (FOSSIL)
armata, Gyronema armata Goldfuss, 1832 † - syn of: Pseudoplagiothyra armatus (Goldfuss, 1832) † (FOSSIL)
aspera, Lophospira aspera Billings, 1859 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
aulangonensis, Arjamannia aulangonensis Peel, 1975 † (FOSSIL)
badiotica, Eunema badiotica Kittl, 1891 † (FOSSIL)
bantatsuense, Lophospira bantatsuense Kobayashi, 1930 † - syn of: Lophospira rectistriata Raymond, 1908 † (FOSSIL)
basicarinata, Lophospira basicarinata Cullison, 1938 † - syn of: Straparollina basicarinata (Cullison, 1938) † (FOSSIL)
basifalcata, Worthenia basifalcata Korner, 1937 † (FOSSIL)
beatrice, Paupospira beatrice (Foerste, 1914) † (FOSSIL)
beaumonti, Worthenia beaumonti Klipstein, 1843 † - syn of: Rinaldoella beaumonti (Klipstein, 1843) † (FOSSIL)
beedei, Worthenia beedei Knight, 1940 † - syn of: Worthenia whitehorsensis Saunders & Yochelson, 1964 † (FOSSIL)
bellense, Gyronema bellense Tassell, 1978 † - syn of: Kitikamispira bellense (Tassell, 1978) † (FOSSIL)
belli, Lophospira belli Foerste, 1924 † - syn of: Ruedemannia humilis (Ulrich & Scofield, 1897) † (FOSSIL)
bellicarinata, Arjamannia bellicarinata (Donald, 1906) † (FOSSIL)
bembexiformis, Ruedemannia bembexiformis Campbell & Engel, 1963 † (FOSSIL)
bialveozona, Worthenia bialveozona Batten, 1989 † (FOSSIL)
bicarinata, Proturritella bicarinata (Wahlenberg, 1821) † (FOSSIL)
bicarinata, Worthenia bicarinata Batten, 1989 † (FOSSIL)
bicincta, Lophospira bicincta Hall, 1847 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
bieberi, Worthenia bieberi Kittl, 1891 † (FOSSIL)
bijugosus, Loxoplocus bijugosus Reed, 1901 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
bilineata, Worthenia bilineata (Klipstein, 1843) † (FOSSIL)
bilirata, Lophospira bilirata (Hall, 1860) † (FOSSIL)
billingsi, Lophospira billingsi Raymond, 1905 † (FOSSIL)
bispiralis, Loxoplocus bispiralis Clarke & Ruedemann, 1903 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
borealis, Lophospira borealis Donald, 1902 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
borkholmiensis, Ruedemannia borkholmiensis (Koken, 1896) † (FOSSIL)
bowdeni, Paupospira bowdeni (Safford, 1869) † (FOSSIL)
breviangulata, Ruedemannia breviangulata Secrist & Evitt, 1943 † - syn of: Ruedemannia lirata (Ulrich & Scofield, 1897) † (FOSSIL)
brevispira, Eunema brevispira Whiteaves, 1892 † - syn of: Devononerita brevispira (Whiteaves, 1892) † (FOSSIL)
bucheri, Loxoplocus bucheri Foerste, 1923 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
burginensis, Paupospira burginensis (Ulrich & Scofield, 1897) † (FOSSIL)
cainallensis, Worthenia cainallensis Kittl, 1899 † (FOSSIL)
calcifera, Lophospira calcifera Whitfield, 1889 † (FOSSIL)
callahanensis, Ectomaria callahanensis (Rohr, 1980) † (FOSSIL)
callahanensis coeloconoidea, Ectomaria callahanensis coeloconoidea (Rohr, 1980) † (FOSSIL)
calvata, Batteniella calvata Mawson & al., 2002 † (FOSSIL)
canalifera, Worthenia canalifera Münster, 1841 † - syn of: Wortheniella canalifera (Münster, 1841) † (FOSSIL)
cancellatula, Arjamannia cancellatula (Sedgwick & McCoy, 1855) † (FOSSIL)
caradociana, Lophospira caradociana Harper † (FOSSIL)
carinata, Manzanospira carinata Batten, 1989 † (FOSSIL)
cassiana, Worthenia cassiana Kittl, 1891 † - syn of: Wortheniella cassiana (Kittl, 1891) † (FOSSIL)
cassina, Lophospira cassina Whitfield, 1886 † - syn of: Straparollina cassina (Whitfield, 1886) † (FOSSIL)
castlemanensis, Worthenia castlemanensis Lintz Jr., 1958 † (FOSSIL)
catharina, Donaldiella catharina (Billings, 1865) † (FOSSIL)
centervillensis, Longstaffia centervillensis Foerste, 1923 † (FOSSIL)
centralis, Eunema centralis Ulrich & Scofield, 1897 † (FOSSIL)
chico, Gyronema chico Mawson & al., 2002 † - syn of: Australonema chico (Mawson & al., 2002) † (FOSSIL)
cicelia, Donaldiella cicelia (Billings, 1865) † (FOSSIL)
cingulata, Proturritella cingulata (Koken, 1896) † (FOSSIL)
circe, Paupospira circe (Billings, 1857) † (FOSSIL)
cirriformis, Worthenia cirriformis (Laube, 1868) † (FOSSIL)
clathratulum, Eunema clathratulum Whiteaves, 1892 † - syn of: Nodonema clathratulum (Whiteaves, 1892) † (FOSSIL)
clausepeakensis, Gyronema clausepeakensis Kulas & Batten, 1997 † - syn of: Cinclidonema clausepeakensis (Kulas & Batten, 1997) † (FOSSIL)
clivosa, Eunema clivosa Ulrich & Scofield, 1897 † - syn of: Clathrospira conica Ulrich & Scofield, 1897 † (FOSSIL)
cochleata, Frodospira cochleata (Lindström, 1884) † (FOSSIL)
cochleoides, Ectomaria cochleoides Yin, 1932 † - syn of: Orthonema cochleoides (Yin, 1932) † (FOSSIL)
coeloconoidea, Ectomaria callahanensis coeloconoidea Rohr (FOSSIL)
cognata, Ruedemannia cognata (Perner, 1903) † (FOSSIL)
complexa, Longstaffia complexa (Perner, 1903) † (FOSSIL)
compressa, Lophospira compressa Endo, 1935 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
concinnula, Eunema concinnula Ulrich & Scofield, 1897 † (FOSSIL)
concurrens, Lophospira concurrens Perner, 1907 † (FOSSIL)
confinis, Hanusispira confinis (Perner, 1907) † (FOSSIL)
conica, Worthenia conica Assmann, 1937 † (FOSSIL)
conoidea, Lophospira conoidea Ulrich & Scofield, 1897 † (FOSSIL)
conradana, Lophospira conradana Ulrich & Scofield, 1897 † - syn of: Lophospira ventricosa (Hall, 1847) † (FOSSIL)
constantini, Worthenia constantini Mansuy, 1912 † (FOSSIL)
contabulata, Worthenia contabulata Costa, 1964 † (FOSSIL)
coralliophila, Worthenia coralliophila Kittl, 1891 † - syn of: Wortheniella coralliophila (Kittl, 1891) † (FOSSIL)
coronata, Worthenia coronata Münster, 1841 † - syn of: Rinaldoella coronata (Münster, 1841) † (FOSSIL)
corpulenta, Longstaffia corpulenta Sollas, 1879 † - syn of: Longstaffia cyclonema (Salter, 1873) † (FOSSIL)
corrugata, Worthenia corrugata Chronic, 1952 † (FOSSIL)
corrugata, Lophospira corrugata Cullison, 1938 † - syn of: Straparollina cassina (Whitfield, 1886) † (FOSSIL)
crassior, Ruedemannia crassior (Perner, 1903) † (FOSSIL)
crenata, Worthenia crenata Münster, 1841 † - syn of: Rinaldoella crenata (Münster, 1841) † (FOSSIL)
crenilunula, Worthenia crenilunula Yoo, 1994 † (FOSSIL)
crenulata, Worthenia crenulata Batten, 1989 † (FOSSIL)
curvistriata, Worthenia curvistriata Koken & Perner, 1925 † (FOSSIL)
cyclonema, Longstaffia cyclonema (Salter, 1873) † (FOSSIL)
cyclophora, Proturritella cyclophora Koken & Perner, 1925 † (FOSSIL)
debganensis, Lophospira debganensis Horný, 1997 † - syn of: Raphistoma debganensis (Horný, 1997) † (FOSSIL)
declivis, Donaldiella declivis Perner, 1903 † - syn of: Morania declivis (Perner, 1903) † (FOSSIL)
decursa, Lophospira decursa Ulrich & Scofield, 1897 † (FOSSIL)
delicata, Platyworthenia delicata Chronic, 1952 † (FOSSIL)
delicata, Lophospira delicata Tofel & Bretsky, 1987 † - syn of: Eunema centralis Ulrich & Scofield, 1897 † (FOSSIL)
depauperata, Lophospira depauperata Hall & Whitney, 1862 † - syn of: Lophospira ventricosa (Hall, 1847) † (FOSSIL)
derwiduii, Donaldiella derwiduii (Grabau, 1922) † (FOSSIL)
derwiduii, Pagodispira derwiduii Grabau, 1922 † - syn of: Donaldiella derwiduii (Grabau, 1922) † (FOSSIL)
distincta, Worthenia distincta Kittl, 1894 † (FOSSIL)
dorothea, Donaldiella dorothea (Grabau, 1922) † (FOSSIL)
dorothea, Pagodispira dorothea Grabau, 1922 † - syn of: Donaldiella dorothea (Grabau, 1922) † (FOSSIL)
dowlingii, Gyronema dowlingii Whiteaves, 1906 † - syn of: Cyclonema dowlingii (Whiteaves, 1906) † (FOSSIL)
dregeri, Worthenia dregeri Kittl, 1891 † (FOSSIL)
dubia, Lophospira dubia Perner, 1903 † (FOSSIL)
dunlopi, Worthenia dunlopi Thomas, 1940 † - syn of: Wellergyi dunlopi (Thomas, 1940) † (FOSSIL)
duplicata, Worthenia duplicata Kittl, 1891 † (FOSSIL)
duplicatum, Gyronema duplicatum Ulrich & Scofield, 1897 † - syn of: Gyronema semicarinatum (Salter, 1859) † (FOSSIL)
dutchtownensis, Lophospira dutchtownensis Cullison, 1938 † - syn of: Straparollina cassina (Whitfield, 1886) † (FOSSIL)
ecki, Worthenia ecki Assmann, 1924 † (FOSSIL)
ehlersi, Loxoplocus ehlersi Foerste, 1923 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
elegans, Lophospira elegans Endo, 1935 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
elevata, Paupospira elevata (Ulrich & Scofield, 1897) † (FOSSIL)
elongata, Lophospira elongata Butts, 1926 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
endoi, Lophospira endoi Kobayashi, 1934 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
epitome, Proturritella epitome Hudson, 1905 † - syn of: Proturritella historicum Hudson, 1905 † (FOSSIL)
eremita, Worthenia eremita Koken, 1897 † (FOSSIL)
erigione, Eunema erigione Billings, 1865 † - syn of: Eunema erigone Billings, 1865 † (FOSSIL)
erigone, Eunema erigone Billings, 1865 † (FOSSIL)
esinensis, Worthenia esinensis Kittl, 1899 † (FOSSIL)
esthona, Loxoplocus esthona Koken & Perner, 1925 † - syn of: Loxoplocus sedgwicki Donald, 1906 † (FOSSIL)
excavata, Lophospira excavata Donald, 1906 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
exigua, Ectomaria exigua Donald, 1899 † - syn of: Ectomaria prisca (Billings, 1859) † (FOSSIL)
expansa, Paupospira expansa Secrist & Evitt, 1943 † - syn of: Paupospira tropidophora (Meek, 1873) † (FOSSIL)
extendia, Worthenia extendia Tong & Erwin, 2001 † (FOSSIL)
extensus, Worthenia extensus Yin & Yochelson, 1983 † (FOSSIL)
fasciata, Eunema fasciata Savage, 1913 † (FOSSIL)
fermioni, Hanusispira fermioni (Tassell, 1982) † (FOSSIL)
ferruginea, Lophospira ferruginea Donald, 1906 † (FOSSIL)
fillmorensis, Lophospira fillmorensis Ulrich & Scofield, 1897 † - syn of: Eunema concinnula Ulrich & Scofield, 1897 † (FOSSIL)
filosa, Donaldiella filosa (Donald, 1902) † (FOSSIL)
fraternum, Eunema fraternum Perner, 1903 † - syn of: Globonema fraternum (Perner, 1903) † (FOSSIL)
fristschi, Ruedemannia fristschi (Perner, 1903) † (FOSSIL)
fugitiva, Hanusispira fugitiva (Perner, 1907) † (FOSSIL)
fugitiva, Bouskaspira fugitiva Perner, 1907 † - syn of: Hanusispira fugitiva (Perner, 1907) † (FOSSIL)
furcata, Worthenia furcata Kittl, 1891 † (FOSSIL)
gairensis, Yochelsonospira gairensis (Thomas, 1940) † (FOSSIL)
gairensis, Worthenia gairensis Thomas, 1940 † - syn of: Yochelsonospira gairensis (Thomas, 1940) † (FOSSIL)
gamachiana, Paupospira gamachiana Twenhofel, 1928 † - syn of: Paupospira manitouliensis (Foerste, 1924) † (FOSSIL)
gerardi, Lophospira gerardi Grabau, 1922 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
gigantea, Paupospira gigantea Twenhofel, 1928 † - syn of: Paupospira moorei (Ulrich & Scofield, 1897) † (FOSSIL)
gigas, Worthenia gigas Koken, 1898 † - syn of: Wortheniella gigas (Koken, 1898) † (FOSSIL)
girvanensis, Ectomaria girvanensis Donald, 1899 † - syn of: Ectomaria prisca (Billings, 1859) † (FOSSIL)
gothlandicus, Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
grabaui, Lophospira grabaui Endo, 1932 † - syn of: Lophospira selecta (Billings, 1865) † (FOSSIL)
gracilis, Proturritella gracilis Koken, 1889 † (FOSSIL)
gradata, Lophospira gradata Lindström, 1884 † - syn of: Conotoma gradata (Lindström, 1884) † (FOSSIL)
gradatum, Gonionema gradatum Koken, 1897 † - syn of: Proturritella bicarinata (Wahlenberg, 1821) † (FOSSIL)
grandis, Lophospira grandis Butts, 1926 † - syn of: Straparollina cassina (Whitfield, 1886) † (FOSSIL)
grandis, Lophospira grandis Wilson, 1938 † - syn of: Paupospira akpatokensis (Wilson, 1939) † (FOSSIL)
grata, Longstaffia grata (Perner, 1903) † (FOSSIL)
groomii, Longstaffia groomii (Donald, 1905) † (FOSSIL)
gubleri, Worthenia gubleri Delpey, 1941 † (FOSSIL)
guelphicus, Loxoplocus guelphicus Whiteaves, 1906 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
gumbinense, Lophospira gumbinense Saladzius, 1966 † (FOSSIL)
gyrogonia, Lophospira gyrogonia (McCoy, 1851) † (FOSSIL)
hamiltoniae, Gyronema hamiltoniae Hall, 1860 † - syn of: Kitikamispira hamiltoniae (Hall, 1860) † (FOSSIL)
hanusi, Hanusispira hanusi Frýda & Manda, 1997 † (FOSSIL)
hausmanni, Humiliworthenia hausmanni (Goldfuss, 1841) † (FOSSIL)
helicina, Tunstallia helicina (von Schlotheim, 1820) † (FOSSIL)
helicteres, Eunema helicteres Salter, 1859 † (FOSSIL)
hermione, Lophospira hermione Billings, 1865 † - syn of: Lophospira modesta (Billings, 1857) † (FOSSIL)
hespelerensis, Loxoplocus hespelerensis Whiteaves, 1884 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
historicum, Proturritella historicum Hudson, 1905 † (FOSSIL)
holmi, Ruedemannia holmi (Lindström, 1884) † (FOSSIL)
humilis, Ruedemannia humilis (Ulrich & Scofield, 1897) † (FOSSIL)
humilis, Worthenia humilis Böhm, 1895 † (FOSSIL)
hyacinthensis, Loxoplocus hyacinthensis Foerste, 1924 † (FOSSIL)
illinoiensis, Ectomaria illinoiensis Weller, 1916 † - syn of: Hypasteroceras planulatum (Fucini, 1903) † (FOSSIL)
imbricata, Frodospira imbricata (Lindström, 1884) † (FOSSIL)
inconsueta, Lophospira inconsueta Endo, 1935 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
indifferens, Worthenia indifferens Kittl, 1894 † (FOSSIL)
inexpectans, Arjamannia inexpectans (Hall & Whitfield, 1875) † (FOSSIL)
infausta, Lophospira infausta (Perner, 1903) † (FOSSIL)
infidelis, Loxoplocus infidelis Perner, 1903 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
infirma, Lophospira infirma (Perner, 1903) † (FOSSIL)
initialis, Lophospira initialis Koken, 1897 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
instabilis, Ruedemannia instabilis (Donald, 1906) † (FOSSIL)
intercingulata, Eunema intercingulata Seguenza, 1885 † - syn of: Eucyclus alpina Stoliczka, 1861 † (FOSSIL)
intermedium, Gyronema intermedium Bradley, 1930 † - syn of: Cyclonema intermedium (Bradley, 1930) † (FOSSIL)
jaekeli, Lophospira jaekeli Koken & Perner, 1925 † (FOSSIL)
joannisaustriae, Worthenia joannisaustriae Klipstein, 1843 † - syn of: Rinaldoella johannisaustriae (Klipstein, 1843) † (FOSSIL)
kangyaoensis, Lophospira kangyaoensis Endo, 1932 † - syn of: Lophospira selecta (Billings, 1865) † (FOSSIL)
karczewskii, Donaldiella karczewskii Krawczynski, 2002 † (FOSSIL)
kindlei, Lophospira kindlei Foerste, 1924 † - syn of: Brachytomaria kindlei (Foerste, 1924) † (FOSSIL)
kingi, Worthenia kingi Batten, 1989 † (FOSSIL)
kinosakii, Lophospira kinosakii Kobayashi, 1934 † (FOSSIL)
kirnaensis, Ectomaria kirnaensis Koken, 1897 † - syn of: Ectomaria nieszkowskii (Schmidt, 1858) † (FOSSIL)
klamathensis, Worthenia klamathensis Smith, 1927 † (FOSSIL)
klugi, Itimaspira klugi Heidelberger & al., 2009 † (FOSSIL)
knoxvillensis, Lophospira knoxvillensis Ulrich & Scofield, 1897 † - syn of: Trochonemella knoxvillensis (Ulrich & Scofield, 1897) † (FOSSIL)
kodairai, Lophospira kodairai Kobayashi, 1930 † - syn of: Lophospira selecta (Billings, 1865) † (FOSSIL)
konnoi, Lophospira konnoi Kobayashi, 1930 † - syn of: Lophospira selecta (Billings, 1865) † (FOSSIL)
kuckersiana, Lophospira kuckersiana (Teichert, 1932) † (FOSSIL)
laevis, Eunema laevis Seguenza, 1885 † - syn of: Eucyclus alpina Stoliczka, 1861 † (FOSSIL)
laevissima, Ruedemannia laevissima (Lindström, 1884) † (FOSSIL)
lantenoisi, Worthenia lantenoisi Mansuy, 1913 † (FOSSIL)
laqueata, Longstaffia laqueata (Lindström, 1884) † (FOSSIL)
laquetta, Longstaffia laquetta Lindström, 1884 † - syn of: Longstaffia laqueata (Lindström, 1884) † (FOSSIL)
latialveozona, Worthenia latialveozona Batten, 1989 † (FOSSIL)
laticarinata, Ectomaria laticarinata Foerste, 1924 † - syn of: Ectomaria orientalis (Donald, 1906) † (FOSSIL)
laudabilis, Ectomaria laudabilis Perner, 1907 † - syn of: Kaseiella laudabilis (Perner, 1907) † (FOSSIL)
legrandi, Worthenia legrandi Kues & Batten, 2001 † (FOSSIL)
leptonotum, Eunema leptonotum Raymond, 1905 † - syn of: Cyclonema leptonotum (Raymond, 1905) † (FOSSIL)
liebeneri, Worthenia liebeneri (Laube, 1868) † (FOSSIL)
ligylirae, Worthenia ligylirae Yin & Yochelson, 1983 † (FOSSIL)
liljevalli, Gyronema liljevalli Rohr, 1980 † - syn of: Trochonema liljevalli (Rohr, 1980) † (FOSSIL)
lineata, Rudemannia lineata Bradley, 1930 † - syn of: Ruedemannia humilis (Ulrich & Scofield, 1897) † (FOSSIL)
liosutura, Paupospira liosutura Secrist & Evitt, 1943 † - syn of: Paupospira sumnerensis (Safford, 1869) † (FOSSIL)
lirata, Ruedemannia lirata (Ulrich & Scofield, 1897) † (FOSSIL)
lirata, Coronilla lirata Ulrich & Scofield, 1897 † - syn of: Gyronema pulchellum Ulrich & Scofield, 1897 † (FOSSIL)
liratum, Gyronema liratum Ulrich & Scofield, 1897 † - syn of: Gyronema pulchellum Ulrich & Scofield, 1897 † (FOSSIL)
luomianensis, Loxoplocus luomianensis Xi & Yu, 1990 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
lyckholmiensis, Lophospira lyckholmiensis Teichert, 1932 † (FOSSIL)
lyelli, Eunema lyelli Perner, 1903 † - syn of: Globonema lyelli (Perner, 1903) † (FOSSIL)
lyratum, Gyronema lyratum Ulrich & Scofield, 1897 † (FOSSIL)
magna, Worthenia magna Böhm, 1895 † (FOSSIL)
major, Lophospira major (Hall, 1852) † (FOSSIL)
manchuriensis, Lophospira manchuriensis Endo, 1932 † - syn of: Lophospira rectistriata Raymond, 1908 † (FOSSIL)
manitouliensis, Paupospira manitouliensis (Foerste, 1924) † (FOSSIL)
manitoulinensis, Lophospira manitoulinensis Foerste, 1924 † (FOSSIL)
manzanicum, Manzanospira manzanicum (Girty, 1909) † (FOSSIL)
margaritacea, Worthenia margaritacea (Laube, 1868) † (FOSSIL)
marmolatae, Worthenia marmolatae Kittl, 1894 † (FOSSIL)
marylandica, Ectomaria marylandica Clarke & Swartz, 1913 † - syn of: Gyrodoma marylandica (Clarke & Swartz, 1913) † (FOSSIL)
medialis, Lophospira medialis Ulrich & Scofield, 1897 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
mickwitzi, Lophospira mickwitzi Koken, 1896 † (FOSSIL)
microclathrata, Proturritella microclathrata Hudson, 1905 † (FOSSIL)
milleri, Lophospira milleri (Miller, 1877) † (FOSSIL)
minnesotensis, Lophospira minnesotensis Ulrich & Scofield, 1897 † - syn of: Hormotoma minnesotensis (Ulrich & Scofield, 1897) † (FOSSIL)
minuata, Lophospira minuata Endo, 1935 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
minuta, Lophospira minuta Wilson, 1938 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
minutiforma, Gyronema minutiforma Cook & al., 2003 † - syn of: Kitikamispira minutiforma (Cook & al., 2003) † (FOSSIL)
minutinodosa, Gyronema minutinodosa Blodgett & Johnson, 1992 † - syn of: Kitikamispira minuitinodosa Blodgett & Johnson, 1992 † (FOSSIL)
missisquoi, Ectomaria missisquoi Billings, 1865 † - syn of: Ectomaria adelina (Billings, 1865) † (FOSSIL)
mississippiensis, Yochelsonospira mississippiensis (White & Whitfield, 1862) † (FOSSIL)
modesta, Lophospira modesta (Billings, 1857) † (FOSSIL)
mongolica, Ectomaria mongolica Grabau, 1931 † (FOSSIL)
moorei, Paupospira moorei (Ulrich & Scofield, 1897) † (FOSSIL)
morinensis, Donaldiella morinensis Horný, 1952 † - syn of: Cyrtostropha morinensis (Horný, 1952) † (FOSSIL)
morrisi, Lophospira morrisi Grabau, 1922 † - syn of: Lophospira rectistriata Raymond, 1908 † (FOSSIL)
muensteri, Worthenia muensteri Klipstein, 1843 † - syn of: Rinaldoella muensteri (Klipstein, 1843) † (FOSSIL)
multicarinata, Worthenia multicarinata (Mansuy, 1912) † (FOSSIL)
multicarinata, Worthenia multicarinata Assmann, 1924 † - syn of: Worthenia zardinii Yin & Yochelson, 1983 † (FOSSIL)
multicarinata, Longstaffia multicarinata Pitcher, 1939 † - syn of: Longstaffia centervillensis Foerste, 1923 † (FOSSIL)
multicostata, Ectomaria multicostata Hayasaka, 1943 † (FOSSIL)
multilineata, Worthenia multilineata Batten, 1989 † - syn of: Biarmeaspira multilineata (Batten, 1989) † (FOSSIL)
multilirata, Gyronema multilirata Hall, 1859 † - syn of: Barynema multilirata (Hall, 1859) † (FOSSIL)
munda, Frodospira munda (Lindström, 1884) † (FOSSIL)
munsteri, Worthenia munsteri Klipstein, 1843 † - syn of: Rinaldoella muensteri (Klipstein, 1843) † (FOSSIL)
nacreformis, Gyronema nacreformis Yoo, 1994 † - syn of: Araeonema nacreformis (Yoo, 1994) † (FOSSIL)
nana, Worthenia nana Grabau, 1931 † (FOSSIL)
nauvooensis, Yochelsonospira nauvooensis (Worthen, 1884) † (FOSSIL)
nelsonae, Loxoplocus nelsonae Peel, 1975 † (FOSSIL)
nieszkowskii, Ectomaria nieszkowskii (Schmidt, 1858) † (FOSSIL)
nitidum, Eunema nitidum Ulrich & Scofield, 1897 † - syn of: Slehoferia nitida (Ulrich & Scofield, 1897) † (FOSSIL)
normaliana, Proturritella normaliana Raymond, 1905 † - syn of: Proturritella historicum Hudson, 1905 † (FOSSIL)
northviewensis, Yochelsonospira northviewensis (Weller, 1899) † (FOSSIL)
norvegica, Pagodispira norvegica Billings, 1865 † - syn of: Donaldiella cicelia (Billings, 1865) † (FOSSIL)
norvegica, Donaldiella norvegica Holtedahl, 1915 † - syn of: Donaldiella cicelia (Billings, 1865) † (FOSSIL)
notabilis, Lophospira notabilis Ulrich & Scofield, 1897 † - syn of: Trochonemella notablis (Ulrich & Scofield, 1897) † (FOSSIL)
notablis, Lophospira notablis Ulrich & Scofield, 1897 † - syn of: Trochonemella notablis (Ulrich & Scofield, 1897) † (FOSSIL)
nuda, Humiliworthenia nuda (Koken, 1900) † (FOSSIL)
nuda, Paupospira tropidophora nuda Perner (FOSSIL)
obliqua, Lophospira obliqua Ulrich & Scofield, 1897 † (FOSSIL)
obliquestriata, Lophospira obliquestriata Longst, 1924 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
octavium, Gyronema octavium D'Orbigny, 1850 † - syn of: Poleumita octavia (D'Orbigny, 1850) † (FOSSIL)
onimarensis, Kawanamia onimarensis Kase, 1988 † (FOSSIL)
orientalis, Ectomaria orientalis (Donald, 1906) † (FOSSIL)
orientalis, Worthenia orientalis (Roemer, 1880) † (FOSSIL)
ormistoni, Gyronema ormistoni Blodgett, 1992 † - syn of: Kitikamispira ormistoni (Blodgett, 1992) † (FOSSIL)
oweni, Paupospira oweni (Ulrich & Scofield, 1897) † (FOSSIL)
ozakii, Lophospira ozakii Endo, 1935 † (FOSSIL)
pagoda, Ectomaria pagoda (Salter, 1859) † (FOSSIL)
pagoda, Lophospira pagoda Kobayashi, 1930 † (FOSSIL)
pagoda, Worthenia pagoda Mansuy, 1914 † (FOSSIL)
pagoda, Yochelsonospira pagoda Thein & Nitecki, 1974 † - syn of: Yochelsonospira tenuilineata (Girty, 1929) † (FOSSIL)
pagodai, Donaldiella pagodai (Endo, 1932) † (FOSSIL)
pagodai, Lophospira pagodai Endo, 1932 † - syn of: Donaldiella cicelia (Billings, 1865) † (FOSSIL)
papillosa, Lophospira papillosa Billings, 1857 † - syn of: Brachytomaria papillosa (Billings, 1857) † (FOSSIL)
parvula, Worthenia parvula Hoare & al., 1997 † (FOSSIL)
pauper, Gyronema pauper Hall, 1867 † - syn of: Oriostoma pauper (Hall, 1867) † (FOSSIL)
peachii, Ectomaria peachii Donald, 1899 † - syn of: Ectomaria adventa (Butts, 1926) † (FOSSIL)
peracuta, Paupospira peracuta Ulrich & Scofield, 1897 † - syn of: Paupospira burginensis (Ulrich & Scofield, 1897) † (FOSSIL)
perangulata, Lophospira perangulata (Hall, 1847) † (FOSSIL)
perelegans, Lophospira perelegans Stauffer, 1937 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
perfecta, Lophospira perfecta Koken & Perner, 1925 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
perforata, Lophospira perforata Ulrich & Scofield, 1897 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
perizomata, Worthenia perizomata White, 1881 † - syn of: Worthenia speciosa (Meek & Worthen, 1860) † (FOSSIL)
perlamellosus, Paupospira perlamellosus Ulrich & Scofield, 1897 † - syn of: Paupospira tropidophora (Meek, 1873) † (FOSSIL)
perneri, Paupospira perneri Longst, 1924 † - syn of: Paupospira trilineata (Foerste, 1923) † (FOSSIL)
piersalense, Proturritella piersalense (Koken, 1897) † (FOSSIL)
piersalense, Gonionema piersalense Koken, 1897 † - syn of: Proturritella piersalense (Koken, 1897) † (FOSSIL)
pilula, Worthenia pilula Batten, 1989 † (FOSSIL)
planalveozona, Worthenia planalveozona Batten, 1989 † (FOSSIL)
pleurotomariformis, Worthenia pleurotomariformis Delpey, 1941 † - syn of: Stenozone pleurotomariformis (Delpey, 1941) † (FOSSIL)
plutonis, Worthenia plutonis Kittl, 1894 † (FOSSIL)
praecipitum, Gyronema praecipitum Ulrich & Scofield, 1897 † - syn of: Cyclonema praecipitum (Ulrich & Scofield, 1897) † (FOSSIL)
praerupta, Worthenia praerupta Böhm, 1895 † (FOSSIL)
prantli, Batteniella prantli Frýda & Manda, 1997 † (FOSSIL)
prisca, Ectomaria prisca (Billings, 1859) † (FOSSIL)
prisca, Ruedemannia prisca Koken & Perner, 1925 † - syn of: Ruedemannia lirata (Ulrich & Scofield, 1897) † (FOSSIL)
procera, Lophospira procera Ulrich & Scofield, 1897 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
procris, Lophospira procris Billings, 1865 † - syn of: Straparollina procris (Billings, 1865) † (FOSSIL)
producta, Lophospira producta Ulrich & Scofield, 1897 † (FOSSIL)
producta pagodai, Lophospira producta pagodai Endo, 1932 † - syn of: Donaldiella cicelia (Billings, 1865) † (FOSSIL)
pteronoides, Arjamannia pteronoides (Longst, 1924) † (FOSSIL)
pulchella, Lophospira pulchella Ulrich & Scofield, 1897 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
pulchelliformis, Lophospira pulchelliformis Grabau, 1922 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
pulchellum, Gyronema pulchellum Ulrich & Scofield, 1897 † (FOSSIL)
pulchra, Longstaffia pulchra (M'Coy, 1844) † (FOSSIL)
pygmaea, Ectomaria pygmaea Weller, 1916 † - syn of: Donaldina pygmaea (Weller, 1916) † (FOSSIL)
qingyanensis, Worthenia qingyanensis Yu & al., 1974 † - syn of: Wortheniella qingyanensis (Yu & al., 1974) † (FOSSIL)
quadrisulcata, Eunema quadrisulcata Ulrich & Scofield, 1897 † (FOSSIL)
quinquecostata, Ectomaria quinquecostata Yin, 1932 † - syn of: Stegocoelia quinquecostata (Yin, 1932) † (FOSSIL)
ramsayi, Lophospira ramsayi Harper † (FOSSIL)
rarissima, Batteniella rarissima (Perner, 1907) † (FOSSIL)
rarissimus, Loxoplocus rarissimus Perner, 1903 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
rectangularis, Lophospira rectangularis Ulrich & Scofield, 1897 † - syn of: Trochonemella knoxvillensis (Ulrich & Scofield, 1897) † (FOSSIL)
rectistriata, Lophospira rectistriata Raymond, 1908 † (FOSSIL)
reticulata, Gonionema reticulata Koken, 1897 † - syn of: Proturritella bicarinata (Wahlenberg, 1821) † (FOSSIL)
rhombifera, Worthenia rhombifera Korner, 1937 † (FOSSIL)
rhomlifera, Worthenia rhomlifera Korner, 1937 † - syn of: Worthenia rhombifera Korner, 1937 † (FOSSIL)
robbinsi, Eunema robbinsi Hall, 1861 † - syn of: Globonema niota (Hall, 1861) † (FOSSIL)
robusta, Ruedemannia robusta (Lindström, 1884) † (FOSSIL)
rotalineum, Gyronema rotalineum Raymond, 1906 † (FOSSIL)
rupestre, Eunema rupestre Eichwald, 1856 † - syn of: Cyclonema rupestre (Eichwald, 1856) † (FOSSIL)
rupestre sulcifera, Eunema rupestre sulcifera Eichwald, 1840 † - syn of: Cyclonema rupestre sulcifera (Eichwald, 1840) † (FOSSIL)
saffordi, Lophospira saffordi Ulrich & Scofield, 1897 † - syn of: Paupospira oweni (Ulrich & Scofield, 1897) † (FOSSIL)
sakamotoi, Donaldiella sakamotoi Kobayashi, 1930 † - syn of: Donaldiella cicelia (Billings, 1865) † (FOSSIL)
salopiense, Eunema salopiense Pitcher, 1939 † (FOSSIL)
salteri, Gyronema salteri Haswell, 1865 † - syn of: Hecetastoma salteri (Haswell, 1865) † (FOSSIL)
sandbiana, Lophospira sandbiana Ebbestad & al., 2013 † (FOSSIL)
schirjaevensis, Worthenia schirjaevensis Stuckenberg, 1905 † (FOSSIL)
sciotoensis, Ruedemannia sciotoensis Stauffer, 1909 † - syn of: Ruedemannia trilix (Hall, 1862) † (FOSSIL)
sculpta, Worthenia sculpta (Phillips, 1836) † (FOSSIL)
scutulata, Lophospira scutulata Lindström, 1884 † - syn of: Quadricarina scutulata (Lindström, 1884) † (FOSSIL)
sedgwicki, Loxoplocus sedgwicki Donald, 1906 † (FOSSIL)
seelyi, Lophospira seelyi Raymond, 1908 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
selecta, Lophospira selecta (Billings, 1865) † (FOSSIL)
semicarinatum, Gyronema semicarinatum (Salter, 1859) † (FOSSIL)
serratula, Lophospira serratula Salter, 1859 † - syn of: Lophospira serrulata (Salter, 1859) † (FOSSIL)
serrulata, Lophospira serrulata (Salter, 1859) † (FOSSIL)
sexcarinata, Eunema sexcarinata Shrock & Raasch, 1937 † - syn of: Eunema helicteres Salter, 1859 † (FOSSIL)
shallockensis, Lophospira shallockensis Longst, 1924 † (FOSSIL)
sigaretoides, Worthenia sigaretoides Kittl, 1894 † (FOSSIL)
silurica, Loxoplocus silurica (d'Eichwald, 1840) † (FOSSIL)
similior, Donaldiella similior Endo, 1935 † - syn of: Donaldiella cicelia (Billings, 1865) † (FOSSIL)
sinensis, Lophospira sinensis Yü, 1961 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
smoeleni, Eunema smoeleni Holtedahl, 1915 † - syn of: Straparollina smoeleni (Holtedahl, 1915) † (FOSSIL)
sodalis, Ruedemannia sodalis (Koken, 1897) † (FOSSIL)
soluta, Paupospira soluta (Koken & Perner, 1925) † (FOSSIL)
soluta, Loxoplocus soluta (Whiteaves, 1884) † (FOSSIL)
soluta, Worthenia soluta Koken & Perner, 1925 † - syn of: Paupospira soluta (Koken & Perner, 1925) † (FOSSIL)
sororcula, Lophospira sororcula Billings, 1865 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
sororcula, Eunema sororcula Seguenza, 1885 † - syn of: Eucyclus alpina Stoliczka, 1861 † (FOSSIL)
speciosa, Worthenia speciosa (Meek & Worthen, 1860) † (FOSSIL)
spira, Triredimiculum spira Waterhouse, 1983 † (FOSSIL)
spironema, Lophospira spironema Ulrich & Scofield, 1897 † (FOSSIL)
spoliata, Lophospira spoliata Perner, 1907 † - syn of: Paupospira oweni (Ulrich & Scofield, 1897) † (FOSSIL)
spuria, Worthenia spuria Münster, 1841 † - syn of: Wortheniella spuria (Münster, 1841) † (FOSSIL)
striatula, Ruedemannia striatula (Perner, 1907) † (FOSSIL)
strigata, Worthenia strigata Böhm, 1895 † (FOSSIL)
strigillata, Worthenia strigillata Herrick, 1888 † (FOSSIL)
strigillatum, Eunema strigillatum Salter, 1859 † (FOSSIL)
subabbreviata, Lophospira subabbreviata Raymond, 1908 † - syn of: Lophospira rectistriata Raymond, 1908 † (FOSSIL)
subalata, Lophospira subalata Koken & Perner, 1925 † (FOSSIL)
subcylindrica, Lophospira subcylindrica Yü, 1961 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
subglobosa, Lophospira subglobosa Donald, 1906 † (FOSSIL)
subgranulata, Worthenia subgranulata Münster, 1841 † - syn of: Rinaldoella subgranulata (Münster, 1841) † (FOSSIL)
subplicata, Worthenia subplicata (Klipstein, 1843) † (FOSSIL)
subpulchella, Lophospira subpulchella Kobayashi, 1930 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
subpunctata, Worthenia subpunctata Klipstein, 1843 † - syn of: Wortheniella subpunctata (Klipstein, 1843) † (FOSSIL)
subrobusta, Ruedemannia subrobusta (Perner, 1907) † (FOSSIL)
substriata, Worthenia substriata (Klipstein, 1843) † (FOSSIL)
subtilis, Worthenia subtilis Kittl, 1891 † (FOSSIL)
sulcifera, Eunema sulcifera Eichwald, 1840 † - syn of: Cyclonema rupestre sulcifera (Eichwald, 1840) † (FOSSIL)
sumnerensis, Paupospira sumnerensis (Safford, 1869) † (FOSSIL)
superba, Lophospira superba Butts, 1926 † (FOSSIL)
superstes, Worthenia superstes Szabo, 1980 † (FOSSIL)
supraornata, Worthenia supraornata Kittl, 1894 † (FOSSIL)
sybellina, Arjamannia sybellina (Billings, 1866) † (FOSSIL)
tabulata, Worthenia tabulata (Conrad, 1835) † (FOSSIL)
tateiwai, Lophospira tateiwai Kobayashi, 1934 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
tenuilineata, Yochelsonospira tenuilineata (Girty, 1929) † (FOSSIL)
tenuise, Lophospira tenuise Endo, 1935 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
tenuistriata, Paupospira tenuistriata (Ulrich & Scofield, 1897) † (FOSSIL)
teretiuscula, Longstaffia teretiuscula (Perner, 1907) † (FOSSIL)
terrassa, Lophospira terrassa Grabau, 1922 † (FOSSIL)
tesakovi, Lophospira tesakovi Kurushin, 1986 † (FOSSIL)
tetracarina, Donaldiella tetracarina Kobayashi, 1930 † (FOSSIL)
texturata, Worthenia texturata Münster, 1841 † - syn of: Laubella texturata (Münster, 1841) † (FOSSIL)
thebesensis, Paupospira thebesensis (Savage, 1913) † (FOSSIL)
thomasi, Yochelsonospira thomasi (Elias, 1958) † (FOSSIL)
thorsteinssoni, Gyronema thorsteinssoni Rohr & Smith, 1978 † - syn of: Oriostoma thorsteinssoni (Rohr & Smith, 1978) † (FOSSIL)
thraivensis, Arjamannia thraivensis (Longst, 1924) † (FOSSIL)
tibidiensis, Hanusispira tibidiensis (Blodgett & al., 1999) † (FOSSIL)
tibidiensis, Finisterella tibidiensis Blodgett & al., 1999 † - syn of: Hanusispira tibidiensis (Blodgett & al., 1999) † (FOSSIL)
tienshanensis, Lophospira tienshanensis Yü, 1961 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
tienshanica, Hanusispira tienshanica Gubanov & al., 1995 † - syn of: Hanusispira confinis (Perner, 1907) † (FOSSIL)
tietzei, Eunema tietzei Kittl, 1894 † (FOSSIL)
tolli, Ruedemannia tolli (Koken, 1897) † (FOSSIL)
tongxinensis, Worthenia tongxinensis (Guo, 1983) † (FOSSIL)
tortuosa, Frodospira tortuosa (Lindström, 1884) † (FOSSIL)
toulai, Worthenia toulai Kittl, 1891 † - syn of: Wortheniella toulai (Kittl, 1891) † (FOSSIL)
tricarinata, Lophospira tricarinata Hall, 1847 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
trilineata, Paupospira trilineata (Foerste, 1923) † (FOSSIL)
trilineata, Eunema trilineata Hall, 1868 † (FOSSIL)
trilineata, Loxoplocus trilineata Pitcher, 1939 † - syn of: Loxoplocus sedgwicki Donald, 1906 † (FOSSIL)
trilineata, Lophospira trilineata Secrist & Evitt, 1943 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
trilix, Ruedemannia trilix (Hall, 1862) † (FOSSIL)
trimarginata, Proturritella trimarginata (Eichwald, 1840) † (FOSSIL)
trispiralis, Lophospira trispiralis Donald, 1906 † (FOSSIL)
triton, Worthenia triton (D'Orbigny, 1849) † (FOSSIL)
trochiformis, Lophospira trochiformis Grabau, 1922 † - syn of: Lophospira selecta (Billings, 1865) † (FOSSIL)
trochiformis, Eunema trochiformis Seguenza, 1885 † - syn of: Eucyclus alpina Stoliczka, 1861 † (FOSSIL)
trochoformis, Lophospira trochoformis Butts, 1926 † - syn of: Lophospira selecta (Billings, 1865) † (FOSSIL)
trochonemoides, Lophospira trochonemoides Ulrich & Scofield, 1897 † - syn of: Trochonema trochonemoides (Ulrich & Scofield, 1897) † (FOSSIL)
tropidophora, Paupospira tropidophora (Meek, 1873) † (FOSSIL)
tropidophora, Loxoplocus tropidophora Whiteaves, 1884 † - syn of: Loxoplocus soluta (Whiteaves, 1884) † (FOSSIL)
tropidophora nuda, Paupospira tropidophora nuda (Perner, 1911) † (FOSSIL)
tuberculifera, Worthenia tuberculifera Koken, 1900 † (FOSSIL)
tubulosa, Longstaffia tubulosa (Lindström, 1884) † (FOSSIL)
turbinoides, Loxoplocus turbinoides Koken & Perner, 1925 † - syn of: Loxoplocus sedgwicki Donald, 1906 † (FOSSIL)
turriculata, Worthenia turriculata Kittl, 1891 † - syn of: Rinaldoella muensteri (Klipstein, 1843) † (FOSSIL)
turrita, Arjamannia turrita (Portlock, 1843) † (FOSSIL)
turrita, Manzanospira turrita Pan & Erwin, 2002 † (FOSSIL)
turrita, Lophospira turrita Portlock, 1843 † - syn of: Arjamannia turrita (Portlock, 1843) † (FOSSIL)
turritiformis, Lophospira turritiformis Endo, 1932 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
tyrolensis, Eunema tyrolensis Kittl, 1891 † - syn of: Neoeunema tyrolensis (Kittl, 1891) † (FOSSIL)
uniformis, Longstaffia uniformis (Cowper Reed, 1901) † (FOSSIL)
variablis, Lophospira variablis Donald, 1902 † (FOSSIL)
varians, Paupospira varians (Billings, 1857) † (FOSSIL)
ventricosa, Lophospira ventricosa (Hall, 1847) † (FOSSIL)
ventricosa, Eunema ventricosa Yü, 1961 † - syn of: Lophospira milleri (Miller, 1877) † (FOSSIL)
venusta, Worthenia venusta Münster, 1841 † - syn of: Sisenna venusta (Münster, 1841) † (FOSSIL)
vermetus, Loxoplocus vermetus (Koken, 1897) † (FOSSIL)
vermetus, Worthenia vermetus Koken, 1897 † - syn of: Loxoplocus vermetus (Koken, 1897) † (FOSSIL)
vetusta, Lophospira vetusta Stauffer, 1937 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
viator, Paupospira viator (Perner, 1907) † (FOSSIL)
vostokovae, Loxoplocus vostokovae Kurushin, 1986 † - syn of: Loxoplocus gothlandicus Ulrich & Scofield, 1897 † (FOSSIL)
whitehorsensis, Worthenia whitehorsensis Saunders & Yochelson, 1964 † (FOSSIL)
windowblindensis, Worthenia windowblindensis Batten & Stokes, 1986 † (FOSSIL)
wisconsinensis, Eunema wisconsinensis Ulrich & Scofield, 1897 † - syn of: Eunema helicteres Salter, 1859 † (FOSSIL)
woodlandi, Arjamannia woodlandi (Longst, 1924) † (FOSSIL)
wordensis, Manzanospira wordensis Batten, 1989 † (FOSSIL)
xui, Worthenia xui Yin & Yochelson, 1983 † (FOSSIL)
yabei, Lophospira yabei Endo, 1935 † - syn of: Lophospira rectistriata Raymond, 1908 † (FOSSIL)
yentaiensis, Lophospira yentaiensis Endo, 1932 † - syn of: Lophospira perangulata (Hall, 1847) † (FOSSIL)
yunnanensis, Ectomaria yunnanensis Mansuy, 1919 † - syn of: Micrentoma yunnanensis (Mansuy, 1919) † (FOSSIL)
zardinii, Worthenia zardinii Yin & Yochelson, 1983 † (FOSSIL)
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