The taxonomy of the Gastropoda as it was revised in December 2017 by Philippe Bouchet and eight other authors, is a publication which lays out a newly revised system for the scientific classification of gastropod mollusks.
[1] The same work also included the taxonomy of monoplacophorans.
The publication is entitled, "Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families"; it was published by the journal Malacologia.
The following cladogram shows a summary of the new gastropod taxonomy, according to the work's Contents section: Bellerophontida † Pelagiellida † Helcionellida † Paleozoic Basal Taxa that are Certainly Gastropoda † Patellida † Neomphalida Cocculinida Paleozoic Taxa of Uncertain Position † Pleurotomariida Seguenziida Lepetellida Trochida Paleozoic Taxa of Uncertain Position † Cyrtoneritida Cycloneritida Fossil Taxa of Uncertain Position † Architaenioglossa Campanilimorpha Taxa of Uncertain Position "Rissoiform Clade" Taxa of Uncertain Position Neogastropoda Fossil Taxa of Uncertain Position † "Lower Heterobranchia" Taxa of Uncertain Position Acteonimorpha Ringiculida Pleurobranchida Bathydoridoidei Doridoidei Cladobranchia Umbraculida Cephalaspidea Runcinida Aplysiida (Anaspidea) Euthecosomata Pseudothecosomata Gymnosomata Sacoglossa Siphonarimorpha Pylopulmonata Acochlidimorpha Hygrophila Ellobiida Systellommatophora Fossil Taxa of Uncertain Position † Achatinina Scolodontina Taxa of Uncertain Position Succineoidei (Elasmognatha) Rhytidoidei Orthalicoidei Pupilloidei (Orthurethra) Clausilioidei Arionoidei Limacoidei Oleacinoidei Helicoidei (Unassigned to Superfamily) †Superfamily Archinacelloidea Knight, 1952 †Superfamily Bellerophontoidea McCoy, 1852 †Superfamily Pelagielloidea Knight, 1956 (=Orthostrophina) †Superfamily Scenelloidea S. A. Miller, 1889 †Superfamily Yochelcionelloidea Runnegar & Jell, 1976 (Unassigned to Superfamily) †Superfamily Clisospiroidea S. A. Miller, 1889 (=Mimospirina) †Superfamily Euomphaloidea White, 1877 †Superfamily Loxonematoidea Koken, 1889 †Superfamily Macluritoidea Carpenter, 1861 †Superfamily Ophiletoidea Koken, 1907 †Superfamily Oriostomatoidea Koken, 1896 †Superfamily Palaeotrochoidea† Knight, 1956 †Superfamily Trochonematoidea Zittel, 1895 Superfamily Eoacmaeoidea Nakano & Ozawa, 2007 Superfamily Patelloidea Rafinesque, 1815 Superfamily Lottioidea Gray, 1840 Superfamily Neomphaloidea McLean, 1981 Superfamily Cocculinoidea Dall, 1882 †Superfamily Eotomarioidea Wenz, 1938 †Superfamily Murchisonioidea Koken, 1896 Superfamily Pleurotomarioidea Swainson, 1840 †Superfamily Porcellioidea Koken, 1895 †Superfamily Pseudophoroidea S. A. Miller, 1889 †Superfamily Ptychomphaloidea Wenz, 1938 †Superfamily Schizogonioidea Cox, 1960 †Superfamily Sinuspiroidea Mazaev, 2011 Superfamily Seguenzioidea Verrill, 1884 Superfamily Lepetelloidea Dall, 1882 Superfamily Fissurelloidea Fleming, 1822 Superfamily Haliotoidea Rafinesque, 1815 Superfamily Lepetodriloidea McLean, 1988 Superfamily Scissurelloidea Gray, 1847 Superfamily Trochoidea Rafinesque, 1815 †Superfamily Nerrhenoidea Bandel & Heidelberger, 2001 †Superfamily Platyceratoidea Hall, 1879 Superfamily Helicinoidea Superfamily Hydrocenoidea †Superfamily Naticopsoidea Superfamily Neritoidea Superfamily Neritopsoidea †Superfamily Symmetrocapuloidea Unassigned to Superfamily †Superfamily Dendropupoidea †Superfamily Peruneloidea †Superfamily Subulitoidea Superfamily Ampullarioidea Superfamily Cyclophoroidea Superfamily Viviparoidea Unassigned to Superfamily †Superfamily Acteoninoidea †Superfamily Orthonematoidea †Superfamily Palaeostyloidea †Superfamily Pseudozygopleuroidea †Superfamily Soleniscoidea Superfamily Campaniloidea Taxa of uncertain position Suborder Doridina Suborder Cladobranchia Suborder Euthecosomata Suborder Pseudothecosomata Suborder Gymnosomata