Anomalodesmata is an

superorder Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and ...

of saltwater clams,

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

bivalve Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...

molluscs. This grouping was formerly recognised as a taxonomic subclass. It is called a superorder in the current World Register of Marine Species, despite having no orders, to parallel it with sister taxon Imparidentia, which does have orders.

Description

Wood1815 General Conchology pl 18 fig 1 Thracia convexa

The shells of species in this order are of equal size, as are the muscles that hold them closed, and the margins at the hinges are thickened. The margins of the

mantle A mantle is a piece of clothing, a type of cloak. Several other meanings are derived from that. Mantle may refer to: *Mantle (clothing), a cloak-like garment worn mainly by women as fashionable outerwear **Mantle (vesture), an Eastern Orthodox ve ...

are also fused, and there is only a single

hinge tooth Hinge teeth are part of the anatomical structure of the inner surface of a bivalve shell, i.e. the shell of a bivalve mollusk. Bivalves by definition have two valves, which are joined together by a strong and flexible ligament situated on the hing ...

, if any.

Families

In 2010, a new proposed classification system for the Bivalvia was published in '' Malacologia'' by Bieler, Carter & Coan revising the classification of the Bivalvia, including the order Anomalodesmata.Bieler, R., Carter, J.G. & Coan, E.V. (2010) ''Classification of Bivalve families''. Pp. 113-133, in: Bouchet, P. & Rocroi, J.P. (2010), ''Nomenclator of Bivalve Families. Malacologia'' 52(2): 1-184 The following tree is their info which has been updated with the latest information from the World Register of Marine Species: Order: Anomalodesmata *Superfamily: Clavagelloidea **Family: Clavagellidae **Family: Penicillidae *Superfamily: Cuspidarioidea ** Family:

Cuspidariidae Cuspidariidae is a family of small marine bivalve molluscs in the superfamily Cuspidarioidea. Genera and species Genera and species in the family Cuspidariidae: * '' Austroneaera'' Powell, 1937 ** '' Austroneaera brevirostris'' Powell, 1937 ** ...

** Family: Halonymphidae ** Family:

Protocuspidariidae Protocuspidariidae is a family of bivalves belonging to the superfamily Cuspidarioidea in the superorder Anomalodesmata Anomalodesmata is an superorder of saltwater clams, marine bivalve molluscs. This grouping was formerly recognised as a taxo ...

** Family:

Spheniopsidae Spheniopsidae is a family of bivalve Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting ...

*Superfamily: Myochamoidea **Family: Cleidothaeridae **Family: Myochamidae *Superfamily: Pandoroidea ** Family: Lyonsiidae ** Family: Pandoridae *Superfamily: Pholadomyoidea ** Family: † Arenigomyidae ** Family: † Margaritariidae ** Family: Parilimyidae ** Family: Pholadomyidae ** Family: † Ucumariidae *Superfamily: Poromyoidea ** Family: Cetoconchidae ** Family: Poromyidae *Superfamily: Thracioidea ** Family: † Burmesiidae ** Family: Clistoconchidae ** Family:

Laternulidae Laternulidae, common name lantern clams, is a family of saltwater clams, marine bivalve molluscs in the order Anomalodesmata. Description Members of this family have thin, brittle shells that have an elongated oval shape. The valves are white w ...

** Family:

Periplomatidae Periplomatidae is a family of large marine bivalves of the Anomalodesmata Anomalodesmata is an superorder of saltwater clams, marine bivalve molluscs. This grouping was formerly recognised as a taxonomic subclass. It is called a superorder in ...

** Family:

Thraciidae Thraciidae is a Taxonomy (biology), taxonomic family (biology), family of small saltwater clams, marine (ocean), marine bivalves in the order (biology), order Anomalodesmata. Selected genera and species Genera and species within the family Thrac ...

*Superfamily: Verticordioidea ** Family:

Euciroidae Euciroidae is a taxonomic family of saltwater clams, marine bivalve molluscs in the superfamily Verticordioidea. Genera and species Genera and species within the family Euciroidae include: * '' Euciroa'' Dall, 1881 ** '' Euciroa crassa'' Ja ...

** Family: Lyonsiellidae ** Family: Verticordiidae

References

* Powell A W B, ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979

External links

* Bivalve orders {{bivalve-stub