Acanthochasmus Looss, 1901 accepted as Acanthostomum Looss, 1899 (additional source)
Acanthochasmus absconditus Looss, 1901 accepted as Acanthostomum absconditum (Looss, 1901) Gohar, 1934 accepted as Proctocaecum absconditum (Looss, 1901) Lamothe-Argumedo & Ponciano-Rodriguez, 1986 (original description)
Acanthochasmus imbutiformis (Molin, 1859) Looss, 1901 accepted as Acanthostomum imbutiforme (Molin, 1859) Gohar, 1934 accepted as Timoniella imbutiforme (Molin, 1859) Brooks, 1980 accepted as Timoniella imbutiformis (Molin, 1859) Brooks, 1980 (redescription)
Acanthochasmus praeteritus Looss, 1901 accepted as Timoniella praeterita (Looss, 1901) Maillard, 1974 (original description)
Acanthochasmus spiniceps (Looss, 1896) Looss, 1901 accepted as Acanthostomum spiniceps (Looss, 1896) Looss, 1899 (redescription)
Anisocoelium capitellatum (Rudolphi, 1819) Lühe, 1900 (redescription)
Anisogaster Looss, 1901 nec Deyrolle, 1862 accepted as Anisocladium Looss, 1902 (original description)
Anisogaster fallax (Rudolphi, 1819) Looss, 1901 accepted as Anisocladium fallax (Rudolphi, 1819) Looss, 1902 (redescription)
Anisogaster fallax (Rudolphi, 1819) Looss, 1901 accepted as Anisocladium fallax (Rudolphi, 1819) Looss, 1902 (new combination reference)
Anisogaster gracilis Looss, 1901 accepted as Anisocladium gracile (Looss, 1901) Vlasenko, 1931 (original description)
Dihemistephanus Looss, 1901 (original description)
Dihemistephanus lydiae (Stossich, 1896) Looss, 1901 (new combination reference)
Dihemistephanus lydiae (Stossich, 1896) Looss, 1901 (taxonomy source)
Distomum osculatum Looss, 1901 accepted as Tormopsolus osculatus (Looss, 1901) Poche, 1926 (original description)
Stephanochasmus Looss, 1900 accepted as Stephanostomum Looss, 1899 (additional source)
Stephanochasmus bicoronatus (Stossich, 1883) Looss, 1901 accepted as Stephanostomum bicoronatum (Stossich, 1883) Fuhrmann, 1928 (new combination reference)
Stephanochasmus bicoronatus (Stossich, 1883) Looss, 1901 accepted as Stephanostomum bicoronatum (Stossich, 1883) Fuhrmann, 1928 (redescription)
Stephanochasmus caducus Looss, 1901 accepted as Stephanostomum caducum (Looss, 1901) Manter, 1934 (original description)
Stephanochasmus cesticillus (Molin, 1858) Looss, 1900 accepted as Stephanostomum cesticillus (Molin, 1858) Looss, 1899 (redescription)
Stephanochasmus minutus Looss, 1901 accepted as Stephanostomum minutum (Looss, 1901) Manter, 1940 (original description)
Stephanochasmus pristis (Deslongchamps, 1824) Looss, 1901 accepted as Stephanostomum pristis (Deslongchamps, 1824) Looss, 1899 (new combination reference)
Stephanochasmus pristis (Deslongchamps, 1824) Looss, 1901 accepted as Stephanostomum pristis (Deslongchamps, 1824) Looss, 1899 (redescription)

Adriatic Sea for Acanthochasmus praeteritus Looss, 1901 
Adriatic Sea for Anisogaster gracilis Looss, 1901 
Adriatic Sea for Distomum osculatum Looss, 1901 
Egypt for Acanthochasmus absconditus Looss, 1901 
Egypt for Acanthochasmus spiniceps (Looss, 1896) Looss, 1901 
Egyptian part of the Mediterranean Sea - Eastern Basin for Acanthochasmus imbutiformis (Molin, 1859) Looss, 1901 
Egyptian part of the Mediterranean Sea - Eastern Basin for Acanthochasmus praeteritus Looss, 1901