Between brackets is the number of accepted extant species
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- Decapoda (17 683)
- Suborder Decapoda incertae sedis †
- Suborder Dendrobranchiata (533)
- Suborder Euzygida accepted as Stenopodidea
- Suborder Heterochelida
- Suborder Macrura
- Suborder Macrura reptantia
- Suborder Natantia
- Suborder Pleocyemata (17 150)
- Infraorder Achelata (153)
- Infraorder Anomura (3 414)
- Infraorder Astacidea (783)
- Infraorder Axiidea (600)
- Infraorder Brachyura (7 883)
- Section Callichimaeroida †
- Section Cyclodorippoida (110)
- Section Dakoticancroida †
- Section Dromiacea (189)
- Superfamily Dromiacea incertae sedis †
- Superfamily Dromioidea De Haan, 1833 (160)
- Family Basinotopidae Karasawa, Schweitzer & Feldmann, 2011 †
- Family Diaulacidae Wright & Collins, 1972 †
- Family Dromiidae De Haan, 1833 (130)
- Subfamily Basinotopinae Karasawa, Schweitzer & Feldmann, 2011 † accepted as Basinotopidae Karasawa, Schweitzer & Feldmann, 2011 †
- Subfamily Dromiidae incertae sedis †
- Subfamily Dromiinae De Haan, 1833 (124)
- Genus Alainodromia McLay, 1998 (2)
- Genus Alcockdromia McLay, 2019 (1)
- Genus Ascidiophilus Richters, 1880 (1)
- Genus Austrodromidia McLay, 1993 (5)
- Genus Baccadromia McLay & Hosie, 2022 (1)
- Genus Barnardromia McLay, 1993 (2)
- Genus Basadromia Artal, Van Bakel, Domínguez & Gómez, 2016 †
- Genus Conchoecetes Stimpson, 1858 (9)
- Genus Conchoedromia Chopra, 1934 accepted as Conchoecetes Stimpson, 1858
- Genus Costadromia Feldmann & Schweitzer, 2019 †
- Genus Cryptodromia Stimpson, 1858 (19)
- Genus Cryptodromidiopsis Borradaile, 1903 accepted as Cryptodromiopsis Borradaile, 1903
- Genus Cryptodromiopsis Borradaile, 1903 (3)
- Genus Desmodromia McLay, 2001 (2)
- Genus Dromia Weber, 1795 (5)
- Genus Dromides Borradaile, 1903 accepted as Cryptodromia Stimpson, 1858
- Genus Dromidia Stimpson, 1858 (5)
- Genus Dromidiopsis Borradaile, 1900 (6)
- Genus Dromiopsis Reuss, 1858 †
- Genus Epidromia Kossman, 1878 accepted as Epigodromia McLay, 1993
- Genus Epigodromia McLay, 1993 (11)
- Genus Epipedodromia André, 1932 (1)
- Genus Eudromia Henderson, 1888 accepted as Eudromidia Barnard, 1947
- Genus Eudromidia Barnard, 1947 (2)
- Genus Eudromiopsis Balss, 1957 accepted as Eudromidia Barnard, 1947
- Genus Evius Moreira, 1912 accepted as Moreiradromia Guinot & Tavares, 2003
- Genus Exodromidia Stebbing, 1905 (3)
- Genus Foredromia McLay, 2002 (1)
- Genus Fultodromia McLay, 1993 (2)
- Species Fultodromia nodipes (Guérin, 1832)
- Species Fultodromia spinifera (Montgomery, 1931)
- Genus Haledromia McLay, 1993 (1)
- Genus Hemisphaerodromia Barnard, 1954 (1)
- Genus Homalodromia Miers, 1884 (1)
- Genus Kerepesia Müller, 1976 †
- Genus Lamarckdromia Guinot & Tavares, 2003 (3)
- Genus Lauridromia McLay, 1993 (2)
- Genus Lewindromia Guinot & Tavares, 2003 (1)
- Genus Mclaydromia Guinot & Tavares, 2003 (2)
- Genus Metadromia McLay, 2009 (1)
- Genus Moreiradromia Guinot & Tavares, 2003 (2)
- Genus Paradromia Balss, 1921 (2)
- Genus Parasphaerodromia Spiridonov, 1992 accepted as Platydromia Brocchi, 1877
- Genus Petalomera Stimpson, 1858 (4)
- Genus Platydromia Brocchi, 1877 (1)
- Genus Platydromia Fulton & Grant, 1902 accepted as Epipedodromia André, 1932
- Genus Pseudodromia Stimpson, 1858 (4)
- Genus Speodromia Barnard, 1947 (1)
- Genus Stebbingdromia Guinot & Tavares, 2003 (1)
- Genus Sternodromia Forest, 1974 (2)
- Genus Stimdromia McLay, 1993 (7)
- Genus Takedromia McLay, 1993 (5)
- Genus Torodromia Artal, Ferratges, Van Bakel & Zamora, 2022 †
- Genus Tumidodromia McLay, 2009 (1)
- Genus Tunedromia McLay, 1993 (1)
- Subfamily Hypoconchinae Guinot & Tavares, 2003 (6)
- Subfamily Sphaerodromiinae Guinot & Tavares, 2003 accepted as Sphaerodromiidae Guinot & Tavares, 2003
- Genus Dromilite H. Milne Edwards, 1837 † accepted as Dromilites Bell, 1858 †
- Genus Lasiodromia Alcock, 1901 accepted as Homalodromia Miers, 1884
- Genus Pseudodromilites Beurlen, 1928 †
- Genus Quinquerugatus Franţescu, Feldmann & Schweitzer, 2010 †
- Genus Vincentdromia Schweitzer, 2024 †
- Family Dromioidea incertae sedis †
- Family Dynomenidae Ortmann, 1892 (22)
- Family Sphaerodromiidae Guinot & Tavares, 2003 (8)
- Family Tymolinae Alcock, 1896 accepted as Cyclodorippidae Ortmann, 1892
- Family Xandarocarcinidae Karasawa, Schweitzer & Feldmann, 2011 †
- Superfamily Glaessneropsoidea Patrulius, 1959 †
- Superfamily Homolodromioidea Alcock, 1900 (29)
- Superfamily Konidromitoidea Schweitzer & Feldmann, 2010 †
- Section Etyoida †
- Section Eubrachyura (7 446)
- Section Homoloida (91)
- Section Podotremata accepted as Brachyura
- Section Raninoida (47)
- Section Torynommoida †
- Family Brachyura incertae sedis
- Family Cretapsaridae Luque in Luque, Xing, Briggs, Clark, Duque, Hui, Mai & McKellar, 2021 †
- Family Montemagrechiridae Klompmaker, Portell & van der Meij, 2016 †
- Genus Psammograpsus A. Milne-Edwards, 1860 †
- Genus Zoea Bosc, 1801
- Infraorder Callianassidea accepted as Axiidea
- Infraorder Caridea (3 919)
- Infraorder Gebiidea (252)
- Infraorder Glypheidea (2)
- Infraorder Palaeopalaeomonida †
- Infraorder Polychelida (38)
- Infraorder Procarididea (6)
- Infraorder Stenopodidea (100)
- Suborder Reptantia
- Suborder Trichelida