List of mollusc orders

List of mollusc orders illustrates the 97 orders in the phylum Mollusca, the largest marine animal phylum. 85,000 extant species are described, making up 23% of described marine organisms.

Class [Aplacophora]

Subclass [Caudofoveata]

No orders, 6 families, 15 genera, 150 species.

Subclass [Solenogastres]

Order Neomeniamorpha
Order Pholidoskepia

Testaria (unranked)

Class Polyplacophora ([Chiton]s)

Order Multiplacophora †
Order Neoloricata
Order Paleoloricata †

Subphylum [Conchifera]

Class [Bivalvia]

Subclass [Heterodonta]

Superfamily Arcticoidea
Superfamily Cardioidea
Superfamily Chamoidea
Superfamily Clavagelloidea
Superfamily Crassatelloidea
Superfamily Cuspidarioidea
Superfamily Hippuritoida †
Superfamily Cyamioidea
Superfamily Cyrenoidea
Superfamily Cyrenoidoidea
Superfamily Dreissenoidea
Superfamily Galeommatoidea
Superfamily Gastrochaenoidea
Superfamily Glossoidea
Superfamily Hemidonacoidea
Superfamily Hiatelloidea
Superfamily Limoidea
Superfamily Lucinoidea
Superfamily Mactroidea
Superfamily Myoidea
Superfamily Pandoroidea
Superfamily Pholadoidea
Superfamily Pholadomyoidea
Superfamily Solenoidea
Superfamily Sphaerioidea
Superfamily Tellinoidea
Superfamily Thyasiroidea
Superfamily Ungulinoidea
Superfamily Veneroidea
Superfamily Verticordioidea
Subclass [Palaeoheterodonta]
Superfamily Trigonioidea
Superfamily Unionoidea
Subclass [Protobranchia]
Superfamily Manzanelloidea
Superfamily Nuculanoidea
Superfamily Nuculoidea
Superfamily Sapretoidea
Superfamily Solemyoidea
Subclass [Pteriomorphia]
Superfamily Anomioidea
Superfamily Arcoidea
Superfamily Dimyoidea
Superfamily Limoidea
Superfamily Mytiloidea
Superfamily Ostreoidea
Superfamily Pectinoidea
Superfamily Pinnoidea
Superfamily Plicatuloidea
Superfamily Pterioidea

Class [Cephalopoda]

Subclass [Nautiloidea]

Order Plectronocerida †
Order Ellesmerocerida †
Order Actinocerida †
Order Pseudorthocerida †
Order Ascocerida †
Order Endocerida †
Order Tarphycerida †
Order Oncocerida †
Order Discosorida †
Order Nautilida
Order Orthocerida †
Order Lituitida †
Order Dissidocerida †
Order Bactritida †
Subclass [Ammonoidea] †
Order Goniatitida †
Order Prolecanitida †
Order Ceratitida †
Order Ammonitida †

Subclass [Coleoidea]

Division [Belemnitida]

Order Belemnoidea †
Order Aulacocerida †
Order Phragmoteuthida †
Order Donovaniconida †
Order Belemnitida †
Order Hematitida †
Division [Neocoleoidea] (most living cephalopods)
Superorder Decapodiformes
* Order Boletzkyida †
* Order Spirulida ram's horn squid
* Order Sepiida cuttlefish
* Order Sepiolida bobtail squid
* Order Teuthida squid
Superorder Octopodiformes
* Order Vampyromorphida vampire squid
* Order Octopoda octopus

Class [Gastropoda]

This overview of orders follows the taxonomy of the Gastropoda (Ponder & Lindberg, 1997):

Order Bellerophontinaka
Order Mimospirina

Subclass Eogastropoda

Order Euomphalida de Koninck 1881
Order Patellogastropoda Lindberg, 1986

Subclass Orthogastropoda Ponder & David R. Lindberg, 1996

Order Murchisoniina Cox & Knight, 1960
Order Neomphaloida Sitnikova & Starobogatov, 1983

Superorder Vetigastropoda Salvini-Plawen, 1989
Superorder Neritaemorphi Koken, 1896

Order Cyrtoneritomorpha
Order Neritopsina Cox & Knight, 1960

Superorder Caenogastropoda Cox, 1960

Order Architaenioglossa Haller, 1890
Order Sorbeoconcha Ponder & David R. Lindberg, 1997
* Infraorder Littorinimorpha Golikov & Starobogatov, 1975
* Infraorder Ptenoglossa J.E. Gray, 1853
* Infraorder Neogastropoda Thiele, 1929

Superorder Heterobranchia J.E. Gray, 1840

Order Heterostropha P. Fischer, 1885
Order Opisthobranchia Milne-Edwards, 1848
* Infraorder Euthecosomata
* Infraorder Pseudothecosomata
* Infraorder Anthobranchia Férussac, 1819
* Infraorder Cladobranchia Willan & Morton, 1984
* Suborder Eupulmonata Haszprunar & Huber, 1990
** Infraorder Acteophila Dall, 1885

Class [Monoplacophora]

Order Tryblidiida

Class [Rostroconchia] †

Order Conocardiida † Newell, 1965
Order Ribeirioida † Kobayashi, 1933
Order Tuarangiida † MacKinnon, 1982

Class Scaphopoda ([Tusk shell]s)

Order Dentaliida
Order Gadilida