Between brackets is the number of accepted extant species
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Shows the number of accepted extant species within the taxon
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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)
- Infraorder Callianassidea accepted as Axiidea
- Infraorder Caridea (3 919)
- Infraorder Gebiidea (252)
- Infraorder Glypheidea (2)
- Superfamily Erymoidea Van Straelen, 1925 †
- Superfamily Glaessnericaroidea Karasawa, Schweitzer & Feldmann, 2013 †
- Superfamily Glypheoidea Winkler, 1881 (2)
- Family Chimaerastacidae Amati, Feldmann & Zonneveld, 2004 †
- Family Clytiopsidae Beurlen, 1927 †
- Family Glypheidae Winkler, 1881 (2)
- Family Litogastridae Karasawa, Schweitzer & Feldmann, 2013 † accepted as Litogastroidae Karasawa, Schweitzer & Feldmann, 2013 †
- Family Litogastroidae Karasawa, Schweitzer & Feldmann, 2013 †
- Genus Aphthartus von Meyer, 1851 † accepted as Litogaster von Meyer, 1847 †
- Genus Aphthartus von Meyer, 1847 † accepted as Aphthartus von Meyer, 1851 †
- Genus Aspidogaster Assman, 1927 † accepted as Paralitogaster Glaessner, 1969 †
- Genus Audogaster Charbonnier, Garassino, Schweigert & Simpson, 2013 †
- Species Audogaster assmanni Charbonnier, Garassino, Schweigert & Simpson, 2013 †
- Species Audogaster spinosa (Assmann, 1827) †
- Genus Brachygaster von Meyer, 1847 † accepted as Myrtonius von Meyer, 1849 †
- Genus Liogaster von Meyer, 1844 † accepted as Litogaster von Meyer, 1847 †
- Genus Lissocardia von Meyer, 1851 †
- Genus Lissocardia von Meyer, 1847 † accepted as Lissocardia von Meyer, 1851 †
- Genus Lithogaster von Meyer, 1847 † accepted as Litogaster von Meyer, 1847 †
- Genus Litogaster von Meyer, 1847 †
- Genus Myrtonius von Meyer, 1849 † accepted as Litogaster von Meyer, 1847 †
- Genus Paralitogaster Glaessner, 1969 † accepted as Litogaster von Meyer, 1847 †
- Genus Piratella Assman, 1927 † accepted as Lissocardia von Meyer, 1851 †
- Genus Pseudoglyphea Oppel, 1861 †
- Genus Pseudopemphix Wüst, 1903 †
- Genus Scapheus Woodward, 1863 † accepted as Pseudoglyphea Oppel, 1861 †
- Genus Seebachia Wüst, 1903 † accepted as Pseudopemphix Wüst, 1903 †
- Genus Triasiglyphea Van Straelen, 1936 † accepted as Pseudoglyphea Oppel, 1861 †
- Genus Tridactylastacus Feldmann, Schweitzer & Zhang in Feldmann, Schweitzer, Hu, Zhang, Zhou, Xie, Huang & Wen, 2012 †
- Family Mecochiridae Van Straelen, 1925 †
- Family Neoglypheidae Karasawa, Schweitzer & Feldmann, 2013 accepted as Glypheidae Winkler, 1881
- Family Platychelidae Glaessner, 1969 †
- Infraorder Palaeopalaeomonida †
- Infraorder Polychelida (38)
- Infraorder Procarididea (6)
- Infraorder Stenopodidea (100)
- Suborder Reptantia
- Suborder Trichelida