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)
- Section Thaumastochelida accepted as Nephropidae Dana, 1852
- Superfamily Astacidea incertae sedis †
- Superfamily Astacoidea Latreille, 1802 (495)
- Superfamily Enoplometopoidea de Saint Laurent, 1988 (11)
- Superfamily Nephropoidea Dana, 1852 (59)
- Superfamily Nepropoidea Dana, 1852 accepted as Nephropoidea Dana, 1852
- Superfamily Parastacoidea Huxley, 1879 (218)
- Family Parastacidae Huxley, 1879 (218)
- Subfamily Astacoidinae Starobogatov, 1996 accepted as Parastacidae Huxley, 1879
- Subfamily Parastacoidinae Starobogatov, 1996 accepted as Parastacidae Huxley, 1879
- Genus Aenigmastacus Feldmann, Schweitzer & Leahy, 2011 †
- Genus Astacoides Guérin-Méneville, 1839 (7)
- Genus Astaconephrops Nobili, 1899 accepted as Cherax Erichson, 1846
- Genus Astacopsis Huxley, 1879 (3)
- Genus Austroastacus Clark, 1936 accepted as Engaeus Erichson, 1846
- Genus Chaeraps Erichson, 1846 accepted as Cherax Erichson, 1846
- Genus Cheraps Erichson, 1846 accepted as Cherax Erichson, 1846
- Genus Cherax Erichson, 1846 (61)
- Subgenus Cherax (Astaconephrops) Nobili, 1899 accepted as Cherax Erichson, 1846
- Subgenus Cherax (Cherax) Erichson, 1846 accepted as Cherax Erichson, 1846
- Species Cherax acherontis Patoka, Bláha & Kouba, 2017
- Species Cherax albertisii (Nobili, 1899)
- Species Cherax albidus Clark, 1936
- Species Cherax alyciae Lukhaup, Eprilurahman & von Rintelen, 2018
- Species Cherax austini Coughran & Dobson in Coughran, Dawkins, Hobson & Furse, 2012
- Species Cherax barretti Clark, 1941
- Species Cherax bicarinatus (Gray in Eyre, 1845)
- Species Cherax boesemani Lukhaup & Pekny, 2008
- Species Cherax boschmai Holthuis, 1949
- Species Cherax buitendijkae Holthuis, 1949
- Species Cherax cainii Austin in Austin & Ryan, 2002
- Species Cherax cairnsensis Riek, 1969
- Species Cherax cartalacoolah Short, 1993
- Species Cherax cid Dawkins & Furse in Coughran, Dawkins, Hobson & Furse, 2012
- Species Cherax communis Holthuis, 1949
- Species Cherax crassimanus Riek, 1967
- Species Cherax cuspidatus Riek, 1969
- Species Cherax davisi Clark, 1941 accepted as Cherax destructor Clark, 1936
- Species Cherax depressus Riek, 1951
- Species Cherax destructor Clark, 1936
- Species Cherax dispar Riek, 1951
- Species Cherax divergens Holthuis, 1950 accepted as Cherax albertisii (Nobili, 1899)
- Species Cherax esculus Riek, 1956 accepted as Cherax destructor Clark, 1936
- Species Cherax gherardii Patoka, Bláha & Kouba, 2015
- Species Cherax glaber Riek, 1967
- Species Cherax glabrimanus Riek, 1967 accepted as Cherax quinquecarinatus (Gray in Eyre, 1845)
- Species Cherax gladstonensis Riek, 1969
- Species Cherax holthuisi Lukhaup & Pekny, 2006
- Species Cherax latimanus McCormack & Raadik, 2021
- Species Cherax leckii Coughran, 2005
- Species Cherax longipes Holthuis, 1949
- Species Cherax lorentzi Roux, 1911
- Species Cherax minor Holthuis, 1996
- Species Cherax misolicus Holthuis, 1949
- Species Cherax monticola Holthuis, 1950
- Species Cherax mosessalossa Lukhaup, Eprilurahman & von Rintelen, 2018
- Species Cherax murido Holthuis, 1949
- Species Cherax neocarinatus Riek, 1967 accepted as Cherax quinquecarinatus (Gray in Eyre, 1845)
- Species Cherax neopunctatus Riek, 1969
- Species Cherax nucifraga Short, 1991
- Species Cherax pallidus Holthuis, 1949
- Species Cherax paniaicus Holthuis, 1949
- Species Cherax papuanus Holthuis, 1949
- Species Cherax parvus Short & Davie, 1993
- Species Cherax peknyi Lukhaup & Herbert, 2008
- Species Cherax phing Lukhaup, Eprilurahman & Von Rintelen, 2024
- Species Cherax plebejus (Hess, 1865)
- Species Cherax preissii (Erichson, 1846)
- Species Cherax pulcher Lukhaup, 2015
- Species Cherax pulverulentus Patoka, Akmal, Bláha & Kouba, 2025
- Species Cherax punctatus Clark, 1936
- Species Cherax quadricarinatus (von Martens, 1868)
- Species Cherax quinquecarinatus (Gray in Eyre, 1845)
- Species Cherax rayko Lukhaup, Eprilurahman & Von Rintelen, 2024
- Species Cherax rhynchotus Riek, 1951
- Species Cherax robustus Riek, 1951
- Species Cherax rotundus Clark, 1941
- Species Cherax setosus Riek, 1951
- Species Cherax snowden Lukhaup, Panteleit & Schrimpf, 2015
- Species Cherax solus Holthuis, 1949
- Species Cherax tenuimanus (Smith, 1912)
- Species Cherax urospinosus Riek, 1969
- Species Cherax wagenknechtae Lukhaup & Eprilurahman, 2022
- Species Cherax warsamsonicus Lukhaup, Eprilurahman & von Rintelen, 2017
- Species Cherax wasselli Riek, 1969
- Species Cherax woworae Patoka, Akmal, Bláha & Kouba, 2023
- Genus Engaeus Erichson, 1846 (36)
- Genus Engaewa Riek, 1967 (5)
- Genus Euastacoides Riek, 1956 accepted as Euastacus Clark, 1936
- Genus Euastacus Clark, 1936 (55)
- Genus Geocharax Clark, 1936 (2)
- Genus Geocherax Clark, 1936 accepted as Geocharax Clark, 1936
- Genus Gramastacus Riek, 1972 (2)
- Genus Lammuastacus Aguirre-Urreta, 1992 †
- Genus Ombrastacoides Hansen & Richardson, 2006 (11)
- Genus Palaeoechinastacus Martin, Rich, Poore, Schultz, Austin, Kool & Vickers-Rich, 2008 †
- Genus Parachaeraps Smith, 1912 accepted as Cherax Erichson, 1846
- Genus Paranephrops White, 1842 (2)
- Genus Parastacoides Clark, 1936 accepted as Geocharax Clark, 1936
- Genus Parastacus Huxley, 1879 (25)
- Genus Pseudengaeus E Clark, 1936 accepted as Engaeus Erichson, 1846
- Genus Samastacus Riek, 1971 (1)
- Genus Spinastacoides Hansen & Richardson, 2006 (3)
- Genus Tenuibranchiurus Riek, 1951 (1)
- Genus Virilastacus Hobbs, 1991 (4)
- Superfamily Protastacoidea Albrecht, 1983 †
- Superfamily Stenochiroidea Beurlen, 1928 †
- Infraorder Axiidea (600)
- Infraorder Brachyura (7 883)
- 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