Brachycladium oblongum (Braun, 1900) Looss, 1902 accepted as Campula oblonga Cobbold, 1858 (redescription)
Cainocreadium Nicoll, 1909 (original description)
Cainocreadium labracis (Dujardin, 1845) Nicoll, 1909 (new combination reference)
Cryptocotyle concava (Creplin, 1825) Lühe, 1899 (source of synonymy)
Fellodistomidae Nicoll, 1909 (original description)
Fellodistominae Nicoll, 1909 (original description)
Fellodistomum agnotum Nicoll, 1909 (original description)
Fellodistomum fellis (Olsson, 1868) Nicoll, 1909 (redescription)
Fellodistomum fellis (Olsson, 1868) Nicoll, 1909 (new combination reference)
Gymnophallus dapsilis Nicoll, 1907 (additional source)
Lebouria Nicoll, 1909 accepted as Peracreadium Nicoll, 1909 (original description)
Lebouria (Mediantestis) tumidulum (Rudolphi, 1819) Nicoll, 1909 accepted as Plagioporus tumidulus (Rudolphi, 1819) Price, 1934 (new combination reference)
Lebouria idonea Nicoll, 1909 accepted as Plagioporus idoneus (Nicoll, 1909) Price, 1934 accepted as Peracreadium idoneum (Nicoll, 1909) Gibson & Bray, 1982 (original description)
Lebouria obducta Nicoll, 1909 accepted as Plagioporus obductus (Nicoll, 1909) Price, 1934 (original description)
Lebouria tumidula (Rudolphi, 1819) Nicoll, 1909 accepted as Plagioporus tumidulus (Rudolphi, 1819) Price, 1934 (new combination reference)
Lepocreadium serospinosum Nicoll, 1909 (original description)
Maritrematinae Nicoll, 1909 (original description)
Peracreadium Nicoll, 1909 (original description)
Peracreadium commune (Olsson, 1868) Nicoll, 1909 (new combination reference)
Peracreadium genu (Rudolphi, 1819) Nicoll, 1909 (new combination reference)
Plagiorchis notabilis Nicoll, 1909 accepted as Plagiorchis elegans (Rudolphi, 1802) Braun, 1902 (original description)
Podocotyle atomon (Rudolphi, 1802) Odhner, 1905 (redescription)
Podocotyle atomon var. dispar Nicoll, 1909 (original description)
Spelotrema claviforme (Brandes, 1889) Nicoll, 1909 accepted as Microphallus claviformis (Brandes, 1889) Baer, 1944 (additional source)
Spelotrema excellens Nicoll, 1907 accepted as Microphallus excellens (Nicoll, 1907) Baer, 1944 accepted as Microphallus similis (Jägerskiöld, 1900) Baer, 1944 (additional source)
Spelotrema pygmaeum (Levinsen, 1881) Looss, 1902 accepted as Microphallus pygmaeus (Levinsen, 1881) Baer, 1944 (additional source)
Spelotrema simile (Jagerskiold, 1900) Looss, 1902 accepted as Microphallus similis (Jägerskiöld, 1900) Baer, 1944 (additional source)
Stephanophiala Nicoll, 1909 accepted as Crepidostomum Braun, 1900 (original description)
Stephanophiala laureata (Zeder, 1800) Nicoll, 1909 accepted as Crepidostomum vitellobum (Faust, 1918) Hopkins, 1931 accepted as Crepidostomum farionis (Müller, 1780) Lühe, 1909 (new combination reference)
Stephanophiala laureata (Zeder, 1800) Nicoll, 1909 accepted as Crepidostomum vitellobum (Faust, 1918) Hopkins, 1931 accepted as Crepidostomum farionis (Müller, 1780) Lühe, 1909 (redescription)
Stephanophiala transmarina Nicoll, 1909 accepted as Crepidostomum transmarinum (Nicoll, 1909) Hunninen & Hunter, 1933 (original description)
Stephanophialinae Nicoll, 1909 accepted as Allocreadiidae Looss, 1902 (original description)
Steringophorus cluthensis Nicoll, 1909 accepted as Steringotrema cluthense (Nicoll, 1909) Odhner, 1911 accepted as Steringotrema pagelli (van Beneden, 1871) Odhner, 1911 (original description)
Tocotrema jejunum Nicoll, 1907 accepted as Cryptocotyle jejuna (Nicoll, 1907) Ransom, 1920 (redescription)

Celtic Seas for Brachycladium oblongum (Braun, 1900) Looss, 1902 
Firth of Clyde for Podocotyle atomon (Rudolphi, 1802) Odhner, 1905 
Firth of Clyde for Steringophorus cluthensis Nicoll, 1909 
Great Britain for Plagiorchis notabilis Nicoll, 1909 
Irish Sea for Podocotyle atomon var. dispar Nicoll, 1909 
North Sea for Fellodistomum agnotum Nicoll, 1909 
North Sea for Fellodistomum fellis (Olsson, 1868) Nicoll, 1909 
North Sea for Fellodistomum fellis (Olsson, 1868) Nicoll, 1909 
North Sea for Lebouria idonea Nicoll, 1909 
Scotland for Stephanophiala laureata (Zeder, 1800) Nicoll, 1909