List of mollusc orders

Last updated

Cuttlefish of the order Sepiida HPIM1795.JPG
Cuttlefish of the order Sepiida
Pinna nobilis shell and byssus Pinna noblis shell & byssus.JPG
Pinna nobilis shell and byssus

List of mollusc orders illustrates the 97 orders in the phylum Mollusca, the largest marine animal phylum. 85,000 extant species are described, [1] making up 23% of described marine organisms. [2]

Contents

Class Aplacophora

Epimenia verrucosa Epimenia verrucosa.jpg
Epimenia verrucosa

Subclass Caudofoveata

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

Subclass Solenogastres

Testaria (unranked)

Class Polyplacophora (Chitons)

Subphylum Conchifera

Class Bivalvia

Subclass Heterodonta
The right valve of a shell of Tellinella listeri, anterior end towards the right Tellinella listeri.jpg
The right valve of a shell of Tellinella listeri , anterior end towards the right
The venerid species, Austrovenus stutchburyi NZ Cockles.JPG
The venerid species, Austrovenus stutchburyi
Subclass Palaeoheterodonta
Anodonta anatina Anodonta anatina1.jpg
Anodonta anatina
Subclass Protobranchia
Subclass Pteriomorphia
A live individual of Argopecten irradians, family Pectinidae Argopecten irradians.jpg
A live individual of Argopecten irradians , family Pectinidae

Class Cephalopoda

Subclass Nautiloidea
A nautiloid Orthoceras BW.jpg
A nautiloid
Subclass Ammonoidea
Artist's reconstruction of Asteroceras Asteroceras BW.jpg
Artist's reconstruction of Asteroceras

Subclass Coleoidea

Division Belemnitida
Division Neocoleoidea (most living cephalopods)
A spirula spirula squid Spirula spirula4.jpg
A spirula spirula squid

Class Gastropoda

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

Subclass Eogastropoda

Live limpets in the intertidal zone in Cornwall, England. CornishLimpets.JPG
Live limpets in the intertidal zone in Cornwall, England.

Subclass Orthogastropoda Ponder & David R. Lindberg, 1996

Superorder Vetigastropoda Salvini-Plawen, 1989 (limpets)

The shell of an archaeogastropod from the Pliocene of Cyprus. A serpulid worm is attached. CyprusPlioceneGastropod.JPG
The shell of an archaeogastropod from the Pliocene of Cyprus. A serpulid worm is attached.

Superorder Neritaemorphi Koken, 1896

Superorder Caenogastropoda Cox, 1960

Superorder Heterobranchia J.E. Gray, 1840

Class Monoplacophora

  • Order Tryblidiida

Class Rostroconchia

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

Class Scaphopoda (Tusk shells)

A tusk shell of the scaphopod Antalis vulgaris Antalis vulgaris.jpg
A tusk shell of the scaphopod Antalis vulgaris

See also

Related Research Articles

<span class="mw-page-title-main">Gastropoda</span> Class of molluscs

Gastropods, commonly known as slugs and snails, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda.

<span class="mw-page-title-main">Monoplacophora</span> Superclass of molluscs

Monoplacophora, meaning "bearing one plate", is a polyphyletic superclass of molluscs with a cap-like shell, inhabiting deep sea environments. Extant representatives were not recognized as such until 1952; previously they were known only from the fossil record, and were thought to have become extinct 375 million years ago.

<span class="mw-page-title-main">Orthogastropoda</span> Historic group of molluscs

Orthogastropoda was a major taxonomic grouping of snails and slugs, an extremely large subclass within the huge class Gastropoda according to the older taxonomy of the Gastropoda.

<span class="mw-page-title-main">Pulmonata</span> Informal group of gastropods

Pulmonata or pulmonates is an informal group of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includes many land and freshwater families, and several marine families.

<span class="mw-page-title-main">Caenogastropoda</span> Clade of sea snails

Caenogastropoda is a taxonomic subclass of molluscs in the class Gastropoda. It is a large diverse group which are mostly sea snails and other marine gastropod mollusks, but also includes some freshwater snails and some land snails. The subclass is the most diverse and ecologically successful of the gastropods.

<span class="mw-page-title-main">Cocculinoidea</span> Superfamily of gastropods

The Cocculinoidea is a superfamily of deepwater limpets, the only superfamily in the order Cocculinida, one of the main orders of gastropods according to the taxonomy as set up by. The clade Cocciliniformia used to be designated as a superorder.

<span class="mw-page-title-main">Neritopsoidea</span> Superfamily of gastropods

Neritopsoidea is a taxonomic grouping, a superfamily of sea snails, marine gastropod mollusks in the clade Cycloneritimorpha, within the clade Neritimorpha,, or in the order Neritoina within superorder Cycloneritimorpha within the subclass Neritimorpha,.

<span class="mw-page-title-main">Trochoidea (superfamily)</span> Superfamily of sea snails

Trochoidea is a superfamily of small to very large vetigastropod sea snails with gills and an operculum. Species within this superfamily have nacre as the inner shell layer. The families within this superfamily include the Trochidae, the top snails. This superfamily is the largest vetigastropodan superfamily, containing more than 2,000 species.

<span class="mw-page-title-main">Helcionelloida</span> Extinct class of molluscs

Helcionelloida is an extinct group of ancient molluscs. These are the oldest known conchiferan molluscs, that is, they had a mineralised shell. Some members of this class were mistaken for Monoplacophorans. The class was erected by Peel in 1991.

The taxonomy of the Gastropoda, as revised by Winston Ponder and David R. Lindberg in 1997, is an older taxonomy of the class Gastropoda, the class of molluscs consisting of all snails and slugs. The full name of the work in which this taxonomy was published is Towards a phylogeny of gastropod molluscs: an analysis using morphological characters.

<span class="mw-page-title-main">Vetigastropoda</span> Clade of sea snails

Vetigastropoda is a major taxonomic group of sea snails, marine gastropod mollusks that form a very ancient lineage. Taxonomically the Vetigastropoda are sometimes treated as an order, although they are treated as an unranked clade in Bouchet and Rocroi, 2005.

<span class="mw-page-title-main">Neritimorpha</span> Subclass of gastropods

Neritimorpha is a clade of gastropod molluscs that contains around 2,000 extant species of sea snails, limpets, freshwater snails, land snails and slugs. This clade used to be known as the superorder Neritopsina.

<span class="mw-page-title-main">Coreospiridae</span> Extinct family of molluscs

Coreospiridae is an extinct family of Paleozoic molluscs of uncertain position taxonomically. They might be snails (Gastropoda), Helcionelloida, or they might be Monoplacophora.

<span class="mw-page-title-main">Cycloneritida</span> Order of gastropods

Cycloneritida is an order of land snails, freshwater snails, and sea snails.

<span class="mw-page-title-main">Seguenzioidea</span> Superfamily of gastropods

Seguenzioidea is a superfamily of minute to medium-sized sea snails, marine gastropod mollusks in the clade Vetigastropoda.

Khairkhaniidae is an extinct family of Paleozoic fossil molluscs of uncertain position. They are thought to belong to either the Gastropoda or Monoplacophora. They possess planispiral coiled shells with a columnar microstructure.

<span class="mw-page-title-main">Yochelcionelloidea</span> Extinct superfamily of molluscs

Yochelcionelloidea is an extinct superfamily of paleozoic molluscs of uncertain position. The earliest yochelcionellids are known from the Middle Tommotian, but they are most diverse from the Botomian through the early Middle Cambrian.

<span class="mw-page-title-main">Euomphaloidea</span> Extinct superfamily of gastropods

Euomphaloidea, originally Euomphalacea, is an extinct superfamily of marine molluscs that lived from the Early Ordovician to the Late Cretaceous, included in the Gastropoda but speculated as instead perhaps Monoplacophora.

This overview lists proposed changes in the taxonomy of gastropods at the family level and above since 2005, when the taxonomy of the Gastropoda by Bouchet & Rocroi (2005) was published. In other words, these are recent updates in the way various groups of snails and slugs are classified.

The biological systematics and taxonomy of invertebrates as proposed by Richard C. Brusca and Gary J. Brusca in 2003 is a system of classification of invertebrates, as a way to classify animals without backbones.

References

  1. Chapman, A.D. (2009). Numbers of Living Species in Australia and the World, 2nd edition. Australian Biological Resources Study, Canberra. Retrieved 12 January 2010. ISBN   978-0-642-56860-1 (printed); ISBN   978-0-642-56861-8 (online).
  2. Hancock, Rebecca (2008). "Recognising research on molluscs". Australian Museum. Archived from the original on 2009-05-30. Retrieved 2009-03-09.