Gastroptychus (kreeftachtige)
Gastroptychus is een geslacht van kreeftachtigen uit de klasse van de Malacostraca (hogere kreeftachtigen).

Soorten 
 Gastroptychus affinis (Chace, 1942)
 Gastroptychus brachyterus Baba, 2005
 Gastroptychus brevipropodus Baba, 1991
 Gastroptychus laevis (Henderson, 1885)
 Gastroptychus novaezelandiae Baba, 1974
 Gastroptychus paucispina Baba, 1991
 Gastroptychus spinifer (A. Milne Edwards, 1880)
 Gastroptychus sternoornatus (Van Dam, 1933)
 Gastroptychus valdiviae (Balss, 1913)

Synoniemen 
 Gastroptychus cavimurus Baba, 1977 => Sternostylus cavimurus (Baba, 1977)
 Gastroptychus chacei Baba, 1986 => Uroptychus chacei (Baba, 1986)
 Gastroptychus defensa (Benedict, 1902) => Gastroptychus defensus (Benedict, 1902) => Sternostylus defensus (Benedict, 1902)
 Gastroptychus defensus (Benedict, 1902) => Sternostylus defensus (Benedict, 1902)
 Gastroptychus formosus (Filhol, 1884) => Sternostylus formosus (Filhol, 1884)
 Gastroptychus hawaiiensis Baba, 1977 => Sternostylus hawaiiensis (Baba, 1977)
 Gastroptychus hendersoni (Alcock & Anderson, 1899) => Sternostylus hendersoni (Alcock & Anderson, 1899)
 Gastroptychus iaspis Baba & Haig, 1990 => Sternostylus iaspis (Baba & Haig, 1990)
 Gastroptychus investigatoris (Alcock & Anderson, 1899) => Sternostylus investigatoris (Alcock & Anderson, 1899)
 Gastroptychus meridionalis de Melo-Filho & de Melo, 2004 => Sternostylus meridionalis (de Melo-Filho & de Melo, 2004)
 Gastroptychus milneedwardsi (Henderson, 1885) => Sternostylus milneedwardsi (Henderson, 1885)
 Gastroptychus perarmatus (Haig, 1968) => Sternostylus perarmatus (Haig, 1968)
 Gastroptychus rogeri Baba, 2000 => Sternostylus rogeri (Baba, 2000)
 Gastroptychus salvadori Rice & Miller, 1991 => Sternostylus salvadori (Rice & Miller, 1991)
 Gastroptychus spinirostris Ahyong & Poore, 2004 => Uroptychus spinirostris (Ahyong & Poore, 2004)

Chirostylidae