|A live individual of Argopecten irradians, family Pectinidae|
The Pteriomorphia comprise a subclass of saltwater clams, marine bivalve mollusks. It contains several major orders, including the Arcoida, Ostreoida, Pectinoida, Limoida, Mytiloida, and Pterioida. It also contains some extinct and probably basal families, such as the Evyanidae, Colpomyidae, Bakevelliidae, Cassianellidae, and Lithiotidae.
This subclass of mollusks has lamellibranch gills, and isepibenthic. Some attach to the substrate using a byssus. The foot is reduced. The mantle margins are not fused. Gills are usually large and assist in feeding. This group includes the well known mussels, scallops, pen shells, and oysters. It also includes the only members of the class bivalvia to have rudimentary eyes.
In 2010 a new proposed classification system for the Bivalvia was published by Bieler, Carter & Coan revising the classification of the Bivalvia, including the subclass Pteriomorphia. However, the following taxonomy represents the current accepted arrangement of this subclass according to the World Register of Marine Species
(Ark shells and bittersweet shells)
- Superfamily: Arcoidea
- Superfamily: Limopsoidea
(True oysters, winged oysters, scallops, file shells, and their allies)
- Superfamily: Ostreoidea
(Scallops and their allies)
- Superfamily: Anomioidea
- Family: Anomiidae, the jingle shells and saddle oysters
- Superfamily: Plicatuloidea
- Family: Plicatulidae, the kittenpaws
- Superfamily: Dimyoidea
- Family: Dimyidae, the dimyarian oysters
- Superfamily: Pectinoidea
(File shells and their allies)
(Winged oysters and their allies)
- Superfamily: Pinnoidea
- Family: Pinnidae, the pen shells
- Superfamily: Pterioidea
- Pteriomorphia Beurlen, 1944. Retrieved through: World Register of Marine Species on 26 March 2009.
- Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 430. ISBN 0-03-056747-5.
- 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
- Gofas, S. (2014). "Pteriomorphia". World Register of Marine Species. Retrieved 2014-08-19.
- Arcoida Stoliczka, 1871. Retrieved through: World Register of Marine Species on 3 February 2009.
- Ostreoida Ferussac, 1822. Retrieved through: World Register of Marine Species on 9 July 2010.
- Pectinoida Gray, 1854. Retrieved through: World Register of Marine Species on 9 July 2010.
- Limoida Moore, 1952. Retrieved through: World Register of Marine Species on 7 July 2010.
- Mytiloida Ferussac, 1822. Retrieved through: World Register of Marine Species on 9 July 2010.
- Pterioida Newell, 1965. Retrieved through: World Register of Marine Species on 9 July 2010.
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