Atriotrema Belopolskaja, 1958 (identification resource)
Atriotrema lecitholaterale Belopolskaja, 1958 (redescription)
Diacetabulum Belopolskaja, 1952 (identification resource)
Diacetabulum riggini (Dery, 1958) Belopolskaja, 1963 (redescription)
Diacetabulum riggini (Dery, 1958) Belopolskaja, 1963 (new combination reference)
Endocotyle Belopolskaja, 1952 (identification resource)
Gynaecotyla Yamaguti, 1939 (identification resource)
Gynaecotyla adunca (Linton, 1905) Yamaguti, 1939 (redescription)
Levinseniella Ward, 1901 (identification resource)
Levinseniella amnicolae Etges, 1953 accepted as Levinseniella (Monarrhenos) amnicolae Etges, 1953 (redescription)
Levinseniella belopolskoi Khuan, 1962 accepted as Levinseniella pellucida Jagerskiold, 1907 accepted as Levinseniella (Monarrhenos) pellucida Jagerskiold, 1907 (redescription)
Levinseniella camtschatica Morosov, 1960 (redescription)
Levinseniella fissicotyle Belopolskaja, 1958 (redescription)
Levinseniella gymnopocha Coil, 1956 accepted as Levinseniella propinqua Jägerskiöld, 1907 (redescription)
Levinseniella leptophallus Coil, 1956 accepted as Levinseniella propinqua Jägerskiöld, 1907 (redescription)
Levinseniella microovata Belopolskaja, 1958 (redescription)
Levinseniella minuta Price, 1934 accepted as Atriophallophorus minutus (Price, 1934) Deblock & Rose, 1964 (redescription)
Levinseniella somateriae Kulachkova, 1958 accepted as Microphallus somateriae (Kulachkova, 1958) Deblock & Rosé, 1964 accepted as Microphallus pirum (Lebour, 1907) Deblock, 1980 (redescription)
Levinseniella tridigitata Deblock, Capron & Biguet, 1958 accepted as Levinseniella brachysoma (Creplin, 1837) Stiles & Hassall, 1902 (redescription)
Maritrema Nicoll, 1907 (identification resource)
Maritrema afanassjewi var. minor Chen (redescription)
Maritrema echinocirrata Leonov, 1958 (redescription)
Maritrema elongata Deblock, Capron & Biguet, 1961 accepted as Maritrema opisthometra Leonov, 1958 (source of synonymy)
Maritrema eroliae Yamaguti, 1939 (redescription)
Maritrema galloprovinciale Timon- David, 1960 accepted as Maritrema obstipum (Van Cleave & Mueller, 1932) Mueller, 1934 (redescription)
Maritrema glandulosa Coil, 1955 accepted as Probolocoryphe glandulosa (Coil, 1955) Heard & Sikora, 1969 (redescription)
Maritrema macrovestibulum Ogata, 1946 (redescription)
Maritrema magnicirrus Belopolskaja, 1952 (redescription)
Maritrema obstipum (Van Cleave & Mueller, 1932) Mueller, 1934 (redescription)
Maritrema oocysta (Lebour, 1907) Rothschild, 1942 (redescription)
Maritrema opisthometra Leonov, 1958 (redescription)
Maritrema patulus Coil, 1955 accepted as Maritrema patulum Coil, 1955 accepted as Maritreminoides patulus (Coil, 1955) Cable, Connor & Balling, 1960 (redescription)
Maritrema sobolevi Kurochkin, 1962 (redescription)
Maritrema subdolum Jägerskiöld, 1909 (redescription)
Maritrema uca Sarkisian, 1957 accepted as Mecynophallus uca (Sarkisian, 1957) Ching, 1963 accepted as Probolocoryphe uca (Sarkisian, 1957) Heard & Sikora, 1969 accepted as Probolocoryphe glandulosa (Coil, 1955) Heard & Sikora, 1969 (redescription)
Maritrema urayasense Ogata, 1951 (redescription)
Maritrematinae Nicoll, 1909 (identification resource)
Maritreminoides Rankin, 1939 accepted as Maritrema Nicoll, 1907 (identification resource)
Maritreminoides caridinae (Yamaguti & Nisimura, 1944) Chen, 1957 accepted as Maritrema caridinae Yamaguti & Nisimura, 1944 (redescription)
Maritreminoides mapaensis Chen, 1957 (redescription)
Megalophallus Cable, Connor & Balling, 1960 (identification resource)
Megalophallus diodontis Siddiqi & Cable, 1960 accepted as Microphallus diodontis (Siddiqi & Cable, 1960) Deblock & Pearson, 1969 (redescription)
Microphallidae Ward, 1901 (identification resource)
Microphalloides Yoshida, 1938 (identification resource)
Microphallus Ward, 1901 (identification resource)
Microphallus arenaria (Belopol'skaja & Uspenskaja, 1953) Biguet, Deblock & Capron, 1958 (redescription)
Microphallus calidris Belopolskaja & Ryzhikov in Belopolskaja, 1963 (original description)
Microphallus canchei Biguet, Deblock & Capron, 1958 accepted as Microphallus primas (Jägerskiöld, 1908) Stunkard, 1951 (redescription)
Microphallus debuni Biguet, Deblock & Capron, 1958 (redescription)
Microphallus lactophrysi (Siddiqi & Cable, 1960) Belopolskaya, 1963 (redescription)
Microphallus lactophrysi (Siddiqi & Cable, 1960) Belopolskaya, 1963 (new combination reference)
Microphallus limuli Stunkard, 1951 accepted as Microphallus claviformis (Brandes, 1889) Baer, 1944 (redescription)
Microphallus longicollis (Yamaguti, 1939) Baer, 1944 (redescription)
Microphallus minus Ochi, 1928 (redescription)
Microphallus minutus Johnston, 1948 (redescription)
Microphallus muellhaupti (Coil, 1956) Capron, Deblock & Biguet, 1958 (redescription)
Microphallus papillorobustus (Rankin, 1940) Baer, 1944 (redescription)
Microphallus pirum (Afanasyev, 1941) Rausch, 1953 accepted as Microphallus comandorensis Deblock, 1980 accepted as Microphallus enhydrae Rausch & Locker, 1951 (redescription)
Microphallus progeneticus Sogandares-Bernal, 1962 (redescription)
Microphallus similis (Jägerskiöld, 1900) Baer, 1944 (redescription)
Microphallus skrjabini (Caballero y C., 1958) Belopolskaya, 1963 (new combination reference)
Microphallus skrjabini (Caballero y C., 1958) Belopolskaya, 1963 (redescription)
Microphallus trilobatus (Cable & Kuns, 1951) Capron, Deblock & Biguet, 1958 (redescription)
Microphallus turgidus (Leigh, 1958) Belopolskaya, 1963 (new combination reference)
Microphallus turgidus (Leigh, 1958) Belopolskaya, 1963 (redescription)
Numeniotrema Belopolskaja, 1952 (identification resource)
Numeniotrema Belopolskaja, 1952 (taxonomy source)
Numeniotrema bracteolata Belopolskaja & Ryzhikov in Belopolskaja, 1963 (original description)
Numeniotrema uteriposta Belopolskaja & Ryzhikov in Belopol'skaja, 1963 (original description)
Odhneria Travassos, 1921 (identification resource)
Odhneria odhneri Travassos, 1921 (redescription)
Plenosoma Ching, 1960 (identification resource)
Plenosoma minimum Ching, 1960 (redescription)
Pseudolevinseniella Tsai, 1955 (identification resource)
Pseudolevinseniella cheni Tsai, 1955 (redescription)
Pseudomaritrema Belopolskaja, 1952 (identification resource)
Pseudospelotrema Yamaguti, 1939 (subsequent type designation)
Pseudospelotrema ammospizae Hunter & Vernberg, 1953 (redescription)
Pseudospelotrema macrovesiculata Chen, 1957 accepted as Basantisia macrovesiculata (Chen, 1957) Deblock & Pearson, 1968 (redescription)
Pseudospelotrema raminellae (Dery, 1958) Belopolskaya, 1963 accepted as Odhneria raminellae (Dery, 1958) Heard, 1970 (new combination reference)
Pseudospelotrema raminellae (Dery, 1958) Belopolskaya, 1963 accepted as Odhneria raminellae (Dery, 1958) Heard, 1970 (redescription)
Sonkulitrema Ablasov & Chibichenko, 1960 (identification resource)
Sonkulitrema sternae Ablasov & Chibichenko, 1960 (redescription)
Spiculotrema Belopolskaja, 1949 (identification resource)

Aleutian Islands for Microphallus pirum (Afanasyev, 1941) Rausch, 1953 
Baltic sea for Maritrema oocysta (Lebour, 1907) Rothschild, 1942 
Baltic sea for Maritrema subdolum Jägerskiöld, 1909 
Baltic sea for Microphallus papillorobustus (Rankin, 1940) Baer, 1944 
Barents Sea for Levinseniella fissicotyle Belopolskaja, 1958 
Barents Sea for Microphallus arenaria (Belopol'skaja & Uspenskaja, 1953) Biguet, Deblock & Capron, 1958 
Black Sea for Atriotrema lecitholaterale Belopolskaja, 1958 
Black Sea for Gynaecotyla adunca (Linton, 1905) Yamaguti, 1939 
Black Sea for Maritrema echinocirrata Leonov, 1958 
Black Sea for Maritrema oocysta (Lebour, 1907) Rothschild, 1942 
Black Sea for Maritrema opisthometra Leonov, 1958 
Black Sea for Maritrema subdolum Jägerskiöld, 1909 
Black Sea for Microphallus papillorobustus (Rankin, 1940) Baer, 1944 
California for Maritrema uca Sarkisian, 1957 
Carolinian for Gynaecotyla adunca (Linton, 1905) Yamaguti, 1939 
Caspian Sea for Maritrema sobolevi Kurochkin, 1962 
China for Microphallus longicollis (Yamaguti, 1939) Baer, 1944 
Commander Islands for Microphallus pirum (Afanasyev, 1941) Rausch, 1953 
Connecticut for Pseudospelotrema raminellae (Dery, 1958) Belopolskaya, 1963 
Costa Rica for Microphallus skrjabini (Caballero y C., 1958) Belopolskaya, 1963 
England for Maritrema oocysta (Lebour, 1907) Rothschild, 1942 
English Channel for Microphallus canchei Biguet, Deblock & Capron, 1958 
English Channel for Microphallus debuni Biguet, Deblock & Capron, 1958 
Estonian part of the Baltic Sea for Levinseniella somateriae Kulachkova, 1958 
Florida for Diacetabulum riggini (Dery, 1958) Belopolskaja, 1963 
Florida for Microphallus turgidus (Leigh, 1958) Belopolskaya, 1963 
France for Levinseniella tridigitata Deblock, Capron & Biguet, 1958 
France for Maritrema galloprovinciale Timon- David, 1960 
France for Maritrema oocysta (Lebour, 1907) Rothschild, 1942 
France for Microphallus papillorobustus (Rankin, 1940) Baer, 1944 
Guangdong for Maritreminoides mapaensis Chen, 1957 
Guangzhou for Maritrema afanassjewi var. minor Chen 
Guangzhou for Pseudolevinseniella cheni Tsai, 1955 
Guangzhou for Pseudospelotrema macrovesiculata Chen, 1957 
Japan for Maritrema eroliae Yamaguti, 1939 
Japan for Maritrema macrovestibulum Ogata, 1946 
Japan for Maritrema urayasense Ogata, 1951 
Japan for Microphallus minus Ochi, 1928 
Kaliningrad for Atriotrema lecitholaterale Belopolskaja, 1958 
Kaliningrad for Maritrema echinocirrata Leonov, 1958 
Kamchatka for Levinseniella camtschatica Morosov, 1960 
Khabarovsk Krai for Levinseniella belopolskoi Khuan, 1962 
Khabarovsk Krai for Microphallus calidris Belopolskaja & Ryzhikov in Belopolskaja, 1963 
Khabarovsk Krai for Numeniotrema bracteolata Belopolskaja & Ryzhikov in Belopolskaja, 1963 
Khabarovsk Krai for Numeniotrema uteriposta Belopolskaja & Ryzhikov in Belopol'skaja, 1963 
Kirgizistan for Sonkulitrema sternae Ablasov & Chibichenko, 1960 
Louisiana for Microphallus progeneticus Sogandares-Bernal, 1962 
Massachusetts for Levinseniella minuta Price, 1934 
Massachusetts Continental Shelf for Microphallus similis (Jägerskiöld, 1900) Baer, 1944 
Mexico for Microphallus muellhaupti (Coil, 1956) Capron, Deblock & Biguet, 1958 
Murmansk Coast for Atriotrema lecitholaterale Belopolskaja, 1958 
North Carolina for Pseudospelotrema ammospizae Hunter & Vernberg, 1953 
Ontario for Levinseniella gymnopocha Coil, 1956 
Pas de Calais for Maritrema opisthometra Leonov, 1958 
Pas de Calais for Maritrema subdolum Jägerskiöld, 1909 
Primorye for Levinseniella microovata Belopolskaja, 1958 
Primorye for Maritrema magnicirrus Belopolskaja, 1952 
Primorye for Spiculotrema litoralis Belopolskaja, 1949 
Puerto Rican Exclusive Economic Zone for Megalophallus diodontis Siddiqi & Cable, 1960 
Salina Cruz for Levinseniella leptophallus Coil, 1956 
Sea of Japan for Maritrema subdolum Jägerskiöld, 1909 
Shanghai for Microphallus minus Ochi, 1928 
South Australia for Microphallus minutus Johnston, 1948 
Sweden for Maritrema subdolum Jägerskiöld, 1909 
USA for Microphallus papillorobustus (Rankin, 1940) Baer, 1944 
White Sea for Maritrema subdolum Jägerskiöld, 1909 
White Sea for Microphallus arenaria (Belopol'skaja & Uspenskaja, 1953) Biguet, Deblock & Capron, 1958 
White Sea for Microphallus papillorobustus (Rankin, 1940) Baer, 1944