Eurycercus is a genus of crustaceans belonging to the suborder Anomopoda. It is the only genus in the monotypic family Eurycercidae. Eurycercus are relatively large anomopods, reaching sizes as large as .

Species There are 16 species:

Subgenus Eurycercus (Bullatifrons) Frey, 1975: Eurycercus (Bullatifrons) longirostris Hann, 1982 Eurycercus (Bullatifrons) macracanthus Frey, 1973 Eurycercus (Bullatifrons) pompholygodes Frey, 1975 Eurycercus (Bullatifrons) vernalis Hann, 1982 Subgenus Eurycercus (Eurycercus) Baird, 1843: Eurycercus (Eurycercus) lamellatus (O.F. Müller, 1776) Eurycercus (Eurycercus) microdontus Frey, 1978 Subgenus Eurycercus (Teretifrons) Frey, 1975: Eurycercus (Teretifrons) glacialis Lilljeborg, 1887 Eurycercus (Teretifrons) nigracanthus Hann, 1990 Subgenus not determined: Eurycercus beringi Bekker, Kotov & Taylor, 2012 Eurycercus cunninghami King, 1853 Eurycercus lamellatus (O.F. Müller, 1776) Eurycercus meridionalis Bekker, Kotov & Elmoor-Loureiro, 2010 Eurycercus minutus Birabén, 1939 Eurycercus nipponica Tanaka & Fujita, 2002 Eurycercus norandinus Aranguren, Monroy & Gaviria, 2010 Eurycercus spinosus King, 1853

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