Anthus obscurus (basis of record)
Clangula histrionica pacifica (basis of record)
Daphila aurata (basis of record)
Diacetabulum Belopolskaja, 1952 (original description)
Diacetabulum curvicolon Belopolskaja, 1952 (original description)
Endocotyle Belopolskaja, 1952 (original description)
Endocotyle incana Belopolskaja, 1952 (original description)
Gynaecotyla Yamaguti, 1939 (identification resource)
Gynaecotyla adunca (Linton, 1905) Yamaguti, 1939 (redescription)
Gynaecotyla jaegerskioeldi (Travassos, 1921) Yamaguti, 1939 accepted as Gynaecotyla adunca (Linton, 1905) Yamaguti, 1939 (redescription)
Gynaecotyla simillima (Travassos, 1921) Yamaguti, 1939 accepted as Microphallus simillimus (Travassos, 1921) Martorelli, 1991 (redescription)
Gynaecotyla sippiwissettensis (Rankin, 1939) Baer, 1944 accepted as Gynaecotyla nassicola (Cable & Hunninen, 1938) Rankin, 1940 (redescription)
Gynaecotyla squatarolae (Yamaguti, 1934) Yamaguti, 1939 (redescription)
Levinseniella Ward, 1901 (identification resource)
Levinseniella brachysoma (Creplin, 1837) Stiles & Hassall, 1902 (redescription)
Levinseniella bucephalae (Yamaguti, 1935) Yamaguti, 1939 (redescription)
Levinseniella carcinidis Rankin, 1939 accepted as Levinseniella propinqua Jägerskiöld, 1907 (redescription)
Levinseniella charadriformis Young, 1949 accepted as Ascorhytis charadriformis (Young, 1949) Ching, 1965 (redescription)
Levinseniella cruzi Travassos, 1921 (redescription)
Levinseniella howensis Johnston, 1917 (redescription)
Levinseniella indica Lal, 1936 (redescription)
Levinseniella macrophallos (von Linstow, 1875) Jägerskiöld, 1907 (redescription)
Levinseniella minuta Price, 1934 accepted as Atriophallophorus minutus (Price, 1934) Deblock & Rose, 1964 (redescription)
Levinseniella pellucida Jagerskiold, 1907 accepted as Levinseniella (Monarrhenos) pellucida Jagerskiold, 1907 (redescription)
Levinseniella propinqua Jägerskiöld, 1907 (redescription)
Maritrema Nicoll, 1907 (identification resource)
Maritrema acadiae (Swales, 1933) Gower, 1938 (redescription)
Maritrema afanassjewi Belopolskaja, 1952 (original description)
Maritrema arenaria Hadley & Castle, 1940 accepted as Maritrema gratiosum Nicoll, 1907 (redescription)
Maritrema eroliae Yamaguti, 1939 (redescription)
Maritrema gratiosum Nicoll, 1907 (redescription)
Maritrema humile Nicoll, 1907 accepted as Maritrema oocysta (Lebour, 1907) Rothschild, 1942 (redescription)
Maritrema lepidum Nicoll, 1907 accepted as Maritrema linguilla Jägerskiöld, 1908 (redescription)
Maritrema linguilla Jägerskiöld, 1908 (redescription)
Maritrema magnicirrus Belopolskaja, 1952 (original description)
Maritrema nicolli Travassos, 1921 (redescription)
Maritrema ovata Rankin, 1939 (redescription)
Maritrema pulcherrimum Travassos, 1929 (redescription)
Maritrema rhodanicum Carrère, 1936 accepted as Maritrema subdolum Jägerskiöld, 1909 (redescription)
Maritrema sachalinicum Schumakowitsch, 1932 (redescription)
Maritrema subdolum Jägerskiöld, 1909 (redescription)
Maritrematinae Nicoll, 1909 (identification resource)
Maritreminoides Rankin, 1939 accepted as Maritrema Nicoll, 1907 (identification resource)
Maritreminoides medius (Van Cleave & Mueller, 1932) Rankin, 1939 accepted as Quasimaritremopsis media (Van Cleave & Mueller, 1932) Deblock, 1973 (redescription)
Maritreminoides nettae (Gower, 1938) Rankin, 1939 accepted as Maritrema obstipum (Van Cleave & Mueller, 1932) Mueller, 1934 (redescription)
Maritreminoides obstipus (Van Cleave & Mueller, 1932) Rankin, 1939 accepted as Maritrema obstipum (Van Cleave & Mueller, 1932) Mueller, 1934 (redescription)
Microphallidae Ward, 1901 (identification resource)
Microphallinae Ward, 1901 (identification resource)
Microphalloides Yoshida, 1938 (identification resource)
Microphalloides japonicus (Osborn, 1919) Yoshida, 1938 (redescription)
Microphallus Ward, 1901 (identification resource)
Microphallus opacus (Ward, 1894) Ward, 1901 (redescription)
Numeniotrema Belopolskaja, 1952 (original description)
Numeniotrema musculosa Belopolskaja, 1952 (original description)
Phyllodistomum (Microlecithus) kajika Ozaki, 1926 accepted as Phyllodistomum kajika (Ozaki, 1926) Kaw, 1950 (redescription)
Pseudomaritrema Belopolskaja, 1952 (original description)
Pseudomaritrema posterolecithale Belopolskaja, 1952 (original description)
Pseudospelotrema Yamaguti, 1939 (identification resource)
Pseudospelotrema japonicum Yamaguti, 1939 (redescription)
Pseudospelotrema uriae Yamaguti, 1939 (redescription)
Rallus cayenensis (basis of record)
Spelotrema Jägerskiöld, 1901 accepted as Microphallus Ward, 1901 (identification resource)
Spelotrema brevicaeca (Africa & Garcia, 1935) Tubangui & Africa, 1938 accepted as Microphallus brevicaeca (Africa & Garcia, 1935) Baer, 1944 (redescription)
Spelotrema capellae Yamaguti, 1939 accepted as Microphallus capellae (Yamaguti, 1939) Baer, 1944 accepted as Microphallus pygmaeus (Levinsen, 1881) Baer, 1944 (redescription)
Spelotrema claviforme (Brandes, 1889) Nicoll, 1909 accepted as Microphallus claviformis (Brandes, 1889) Baer, 1944 (redescription)
Spelotrema excellens Nicoll, 1907 accepted as Microphallus excellens (Nicoll, 1907) Baer, 1944 accepted as Microphallus similis (Jägerskiöld, 1900) Baer, 1944 (redescription)
Spelotrema feriatum Nicoll, 1907 accepted as Spelotrema excellens Nicoll, 1907 accepted as Microphallus excellens (Nicoll, 1907) Baer, 1944 accepted as Microphallus similis (Jägerskiöld, 1900) Baer, 1944 (source of synonymy)
Spelotrema longicolle Yamaguti, 1939 accepted as Microphallus longicollis (Yamaguti, 1939) Baer, 1944 (redescription)
Spelotrema nicolli Cable & Hunninen, 1938 accepted as Microphallus nicolli (Cable & Hunninen, 1938) Baer, 1944 (redescription)
Spelotrema oedemia Belopolskaja, 1952 accepted as Microphallus oedemia (Belopolskaja, 1952) Biguet, Deblock & Capron, 1958 accepted as Microphallus pygmaeus (Levinsen, 1881) Baer, 1944 (original description)
Spelotrema papillorobusta Rankin, 1940 accepted as Microphallus papillorobustus (Rankin, 1940) Baer, 1944 (redescription)
Spelotrema pirum (Afanasyev, 1941) Belopolskaja, 1952 accepted as Microphallus enhydrae Rausch & Locker, 1951 (redescription)
Spelotrema pirum (Afanasyev, 1941) Belopolskaja, 1952 accepted as Microphallus enhydrae Rausch & Locker, 1951 (new combination reference)
Spelotrema prima (Jägerskiöld, 1908) Belopolskaja, 1952 accepted as Microphallus primas (Jägerskiöld, 1908) Stunkard, 1951 (new combination reference)
Spelotrema prima (Jägerskiöld, 1908) Belopolskaja, 1952 accepted as Microphallus primas (Jägerskiöld, 1908) Stunkard, 1951 (redescription)
Spelotrema pseudogonotyla Chen, 1944 accepted as Microphallus papillorobustus (Rankin, 1940) Baer, 1944 (redescription)
Spelotrema pygmaeum (Levinsen, 1881) Looss, 1902 accepted as Microphallus pygmaeus (Levinsen, 1881) Baer, 1944 (redescription)
Spelotrema simile (Jagerskiold, 1900) Looss, 1902 accepted as Microphallus similis (Jägerskiöld, 1900) Baer, 1944 (redescription)
Spiculotrema Belopolskaja, 1949 (identification resource)
Spiculotrema litoralis Belopolskaja, 1949 (redescription)