Acanthotrigonia borgesi (Rennie, 1945) † (basis of record)
Acanthotrigonia cazadoriana (Wilckens, 1907) † (basis of record)
Acanthotrigonia shepstonei (Griesbach, 1871) † (basis of record)
Arabitrigonia pseudocrenulata (Noetling, 1886) † (basis of record)
Bacatigonia M. R. Cooper, 2015 † (original description)
Bacatigonia ludovicae (Briart & Cornet, 1868) † (basis of record)
Buchotrigonia weberi (Arkhanguelsky, 1916) † accepted as Arkhanguelskya weberi (Arkhanguelsky, 1916) † (basis of record)
Eufalagonia M. R. Cooper, 2015 † (original description)
Eufalagonia angulicosta (Gabb, 1877) † (basis of record)
Eufalagonia angulicostata [sic] † accepted as Eufalagonia angulicosta (Gabb, 1877) † (basis of record)
Eurotrigonia M. R. Cooper, 2015 † (original description)
Eurotrigonia akuschaensis (Anthula, 1899) † (basis of record)
Eurotrigonia aliformis (Parkinson, 1811) † (basis of record)
Eurotrigonia anterior (R. Casey, 1961) † (basis of record)
Eurotrigonia attenuata (Lycett, 1875) † (basis of record)
Eurotrigonia caudata (Agassiz, 1840) † (basis of record)
Eurotrigonia cubanica (Sinzow, 1913) † (basis of record)
Eurotrigonia cuneiformis (Conrad, 1852) † (basis of record)
Eurotrigonia druzczici (Yanin, 2004) † (basis of record)
Eurotrigonia hemilunaris (Saveliev, 1958) † (basis of record)
Eurotrigonia hungarica (Böckh, 1910) † (basis of record)
Eurotrigonia kopetdagensis (M. M. Aliev & R. A. Aliev, 1960) † (basis of record)
Eurotrigonia percaudata (Rollier, 1913) † (basis of record)
Eurotrigonia schapsugensis (Mordvilko, 1932) † (basis of record)
Eurotrigonia subaliformis (Saveliev, 1958) † (basis of record)
Eurotrigonia subpiriformis (Saveliev, 1958) † (basis of record)
Eurotrigonia vectiana (Lycett, 1875) † (basis of record)
Gabbigonia M. R. Cooper, 2015 † (original description)
Gabbigonia eufalensis (Gabb, 1860) † (basis of record)
Gabbigonia gabbi (Stephenson, 1941) † (basis of record)
Gabbigonia kuemmeli (Weller, 1907) † (basis of record)
Gabbigonia marionensis (Stephenson, 1923) † (basis of record)
Gabbigonia moorei (Stephenson, 1941) † (basis of record)
Haumurigonia M. R. Cooper, 2015 † (original description)
Haumurigonia bustamantina (Feruglio, 1938) † (basis of record)
Haumurigonia dumbeae (Freneix, 1958) † (basis of record)
Haumurigonia malagninoi (Medina, 1980) † (basis of record)
Haumurigonia pseudocaudata (Hector, 1886) † (basis of record)
Haumurigonia waitangiensis (C. A. Fleming, 1987) † (basis of record)
Henrywoodsia M. R. Cooper, 2015 † (original description)
Henrywoodsia pygoscelium (Wilckens, 1910) † (basis of record)
Henrywoodsia waiparensis (H. Woods, 1917) † (basis of record)
Incomatiella M. R. Cooper, 2015 † (original description)
Incomatiella incomatensis (Rennie, 1936) † (basis of record)
Incomatiella taurica (Yanin, 2004) † (basis of record)
Kauffmanella M. R. Cooper, 2015 † (original description)
Kauffmanella cerulea [sic] † accepted as Kauffmanella cerulia (Whitfield, 1885) † (basis of record)
Kauffmanella cerulia (Whitfield, 1885) † (basis of record)
Kauffmanella haynensis (Stephenson, 1923) † (basis of record)
Leanzatrigonia M. R. Cooper, 2015 † (original description)
Leanzatrigonia coihuicoensis (C. E. Weaver, 1931) † (basis of record)
Linotrigonia van Hoepen, 1929 † (basis of record)
Linotrigonia (Linotrigonia) danovi Saveliev, 1958 † accepted as Noelmorrisia danovi (Saveliev, 1958) † (basis of record)
Linotrigonia (Linotrigonia) laeviarealis Saveliev, 1958 † accepted as Noelmorrisia laeviarealis (Saveliev, 1958) † (basis of record)
Linotrigonia (Linotrigonia) ninae Saveliev, 1958 † accepted as Noelmorrisia ninae (Saveliev, 1958) † (basis of record)
Linotrigonia (Oistotrigonia) alekseitschiki Saveliev, 1958 † accepted as Oistotrigonia alekseitschiki (Saveliev, 1958) † (basis of record)
Linotrigonia (Oistotrigonia) belbekensis Yanin, 1979 † accepted as Yaninella belbekensis (Yanin, 1979) † (basis of record)
Linotrigonia (Oistotrigonia) convexa Saveliev, 1958 † accepted as Oistotrigonia convexa (Saveliev, 1958) † (basis of record)
Linotrigonia (Oistotrigonia) dragunovi Saveliev, 1958 † accepted as Oistotrigonia dragunovi (Saveliev, 1958) † (basis of record)
Linotrigonia (Oistotrigonia) rectaespinosa Saveliev, 1958 † accepted as Oistotrigonia rectaespinosa (Saveliev, 1958) † (basis of record)
Linotrigonia (Oistotrigonia) sangmilensis Repman, 1967 † accepted as Oistotrigonia sangmilensis (Repman, 1967) † (basis of record)
Linotrigonia (Oistotrigonia) tamalakensis Saveliev, 1958 † accepted as Oistotrigonia tamalakensis (Saveliev, 1958) † (basis of record)
Linotrigonia elegans (W. H. Baily, 1855) † (basis of record)
Linotrigonia forbesi (Lycett, 1875) † accepted as Linotrigonia forbesii (Lycett, 1875) † (basis of record)
Linotrigonia forbesii (Lycett, 1875) † (basis of record)
Linotrigonia itongazi (J. de V. Little, 1957) † (basis of record)
Linotrigonia nibelaensis M. R. Cooper, 1989 † (basis of record)
Linotrigonia plumosa van Hoepen, 1929 † (basis of record)
Linotrigonia umkwelanensis (Etheridge, 1904) † (basis of record)
Linotrigonia venusta van Hoepen, 1929 † (basis of record)
Lyriodon ventricosa Krauss, 1843 † accepted as Rinetrigonia ventricosa (Krauss, 1843) † (basis of record)
Mangyschlakella M. R. Cooper, 2015 † (original description)
Mangyschlakella elisae (Briart & Cornet, 1868) † (basis of record)
Mangyschlakella klytschevae (Saveliev, 1958) † (basis of record)
Mangyschlakella piriformis (Mordvilko, 1932) † (basis of record)
Mangyschlakella tatianae (Saveliev, 1958) † (basis of record)
Megatrigonioidea van Hoepen, 1929 † (basis of record)
Metacanthotrigonia M. Nakano, 1974 † (basis of record)
Metacanthotrigonia datemasamunei (Yehara, 1915) † (basis of record)
Metacanthotrigonia imanishii (M. Nakano, 1958) † (basis of record)
Metacanthotrigonia kawaguchiensis (Tamura & Nishida, 1989) † (basis of record)
Metacanthotrigonia kesadoensis (Tashiro, 1994) † (basis of record)
Metacanthotrigonia kobayashii (M. Nakano, 1958) † (basis of record)
Metacanthotrigonia kofujiensis (Tamura, 1978) † (basis of record)
Metacanthotrigonia longiloba (Jimbo, 1894) † (basis of record)
Metacanthotrigonia monobeana (Tashiro & Kozai, 1982) † (basis of record)
Metacanthotrigonia moriana (Yehara, 1927) † (basis of record)
Metacanthotrigonia obsoleta (M. Nakano, 1958) † (basis of record)
Metacanthotrigonia pseudomoreana [sic] † accepted as Metacanthotrigonia pseudomoriana (Tashiro & T. Matsuda, 1986) † (basis of record)
Metacanthotrigonia pseudomoriana (Tashiro & T. Matsuda, 1986) † (basis of record)
Metacanthotrigonia pustulosa (Nagao, 1930) † (basis of record)
Metacanthotrigonia sakakurai (Yehara, 1923) † (basis of record)
Metacanthotrigonia yeharai (M. Nakano & Numano, 1961) † (basis of record)
Musagonia M. R. Cooper, 2015 † (original description)
Musagonia bowersiana (F. M. Anderson, 1958) † (basis of record)
Noelmorrisia M. R. Cooper, 2015 † (original description)
Noelmorrisia danovi (Saveliev, 1958) † (basis of record)
Noelmorrisia fittoni (Leymerie, 1842) † (basis of record)
Noelmorrisia laeviarealis (Saveliev, 1958) † (basis of record)
Noelmorrisia meyeri (Lycett, 1875) † (basis of record)

 Nomenclature

 for Myophoria elegantoides Körner, 1937 †

Originally described as 'Myophoria? (Trigonia?)' elegantoides. As stated in the description, this was not intended ... [details]

 Publication date

 for Mesotrigonia tarameahensis Freneix, 1958 †

published in 1958, for 1956 [details]

 Taxonomic remark

 for Tamuragonia toyamai (Yehara, 1923) †

Tentatively assigned to Tamuragonia by M. R. Cooper (2015). [details]