alaskana, Monotis alaskana Smith, 1927 † (FOSSIL)
anjuensis, Eomonotis anjuensis (Bytschkov & Efimova, 1966) † (FOSSIL)
bakevelliaeformis, Praeotapiria bakevelliaeformis Kurushin, 1985 † (FOSSIL)
bakevilliaeformis, Otapiria bakevilliaeformis Kurushin, 1985 † (FOSSIL)
boechiformis, Lupherella boechiformis (Hyatt, 1894) † (FOSSIL)
bregeri, Monotis bregeri Girty, 1927 † - syn of: Leptochondria curtocardinalis (Hall & Whitfield, 1877) † (FOSSIL)
callazonensis, Pacimonotis callazonensis (Westermann, 1962) † (FOSSIL)
cancellata, Pectinula cancellata Leanza, 1943 † - syn of: Posidonotis semiplicata (Hyatt, 1894) † (FOSSIL)
daonellaeformis, Eomonotis daonellaeformis (Kiparisova, 1960) † (FOSSIL)
densistriata, Entomonotis ochotica densistriata Teller (FOSSIL)
diptonensis, Eomonotis diptonensis Grant-Mackie, 1980 † (FOSSIL)
dissimilis, Otapiria dissimilis (Cox, 1878) † (FOSSIL)
garforthensis, Monotis garforthensis King, 1850 † - syn of: Pseudomonotis speluncaria (von Schlotheim, 1816) † (FOSSIL)
gryphaeoides, Monotis gryphaeoides von Schlotheim, 1816 † - syn of: Pseudomonotis speluncaria (von Schlotheim, 1816) † (FOSSIL)
haueri, Monotis haueri Kittl, 1912 † (FOSSIL)
hawni, Monotis hawni Meek & Hayden, 1858 † - syn of: Pseudomonotis hawni (Meek & Hayden, 1858) † (FOSSIL)
huidongensis, Lupherella huidongensis (Chen, 1987) † (FOSSIL)
inaequivalvis, Eomonotis inaequivalvis (Bronn, 1930) † (FOSSIL)
jakutica, Eomonotis jakutica (Teller, 1896) † (FOSSIL)
kiritihereensis, Eomonotis kiritihereensis Grant-Mackie, 1980 † (FOSSIL)
landerensis, Monotis landerensis Branson, 1930 † - syn of: Leptochondria curtocardinalis (Hall & Whitfield, 1877) † (FOSSIL)
marshalli, Otapiria marshalli (Trechmann, 1923) † (FOSSIL)
marwicki, Eomonotis marwicki Grant-Mackie, 1980 † (FOSSIL)
masoni, Otapiria masoni Marwick, 1953 † (FOSSIL)
murihikuensis, Eomonotis murihikuensis Grant-Mackie, 1980 † (FOSSIL)
neuquensis, Otapiria neuquensis Damborenea, 1987 † (FOSSIL)
norica, Otapiria norica McRoberts, 2011 † (FOSSIL)
obtusicostata, Eomonotis obtusicostata (Westermann, 1966) † (FOSSIL)
ochotica, Entomonotis ochotica (Keyserling, 1848) † (FOSSIL)
ochotica densistriata, Entomonotis ochotica densistriata (Teller) † (FOSSIL)
ovalis, Monotis ovalis Whiteaves, 1889 † - syn of: Chuluaria occidentalis (Whiteaves, 1889) † (FOSSIL)
pachypleura, Entomonotis pachypleura (Teller, 1886) † (FOSSIL)
pacifica, Otapiria pacifica Covacevich & Escobar, 1979 † (FOSSIL)
parksi, Monotis parksi Girty, 1927 † - syn of: Leptochondria occidanea (Meek, 1877) † (FOSSIL)
pinensis, Eomonotis pinensis (Westermann, 1962) † (FOSSIL)
posteroplana, Entomonotis posteroplana Westermann, 1962 † (FOSSIL)
pygmaea, Monotis pygmaea Münster, 1841 † (FOSSIL)
radialis, Monotis radialis von Schlotheim, 1816 † - syn of: Pseudomonotis speluncaria (von Schlotheim, 1816) † (FOSSIL)
rauparaha, Eomonotis rauparaha Grant-Mackie, 1980 † (FOSSIL)
salinaria, Monotis salinaria Bronn, 1830 † (FOSSIL)
scutiformis, Monotis scutiformis Teller, 1886 † (FOSSIL)
speluncaria, Monotis speluncaria von Schlotheim, 1816 † - syn of: Pseudomonotis speluncaria (von Schlotheim, 1816) † (FOSSIL)
subcircularis, Monotis subcircularis (Gabb, 1864) † (FOSSIL)
symmetrica, Monotis symmetrica Hyatt, 1894 † - syn of: Posidonotis semiplicata (Hyatt, 1894) † (FOSSIL)
tailleuri, Otapiria tailleuri Imlay, 1967 † (FOSSIL)
thaynesiana, Monotis thaynesiana Hall & Whitfield, 1877 † - syn of: Leptochondria curtocardinalis (Hall & Whitfield, 1877) † (FOSSIL)
typica, Eomonotis typica (Kiparisova, 1936) † (FOSSIL)
wairakae, Eomonotis wairakae Grant-Mackie, 1980 † (FOSSIL)
warepana, Inflatomonotis warepana Grant-Mackie, 1980 † (FOSSIL)
zabaikalica, Monotis zabaikalica Kiparisova, 1960 † (FOSSIL)
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