The Pectinoidea are a superfamily of marine

bivalve Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class (biology), class of aquatic animal, aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed b ...

mollusc Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum ...

s, including the

scallop Scallop () is a common name that encompasses various species of marine bivalve molluscs in the taxonomic family Pectinidae, the scallops. However, the common name "scallop" is also sometimes applied to species in other closely related famili ...

s and spiny oysters.Gofas, S. (2012). Pectinoidea. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=151320 on 2012-07-08

Shell anatomy

All members of this superfamily have a triangular

resilium In anatomy, a resilium is part of the bivalve shell, shell of certain bivalve mollusks. It is an internal ligament (bivalve), ligament, which holds the two valves together and is located in a pit or depression known as the resilifer. The resilium ...

with a nonmineralized medial core that functions below the hinge line.

Families

According to the World Register of Marine Species, the Pectinoidea include these families (all taxa marked † are extinct): *

Cyclochlamydidae Cyclochlamydidae is a family of bivalves belonging to the order Pectinida Pectinida is a taxonomic order of large and medium-sized saltwater clams, marine bivalve molluscs, commonly known as scallops and their allies. It is believed that th ...

* Entoliidae * Neitheidae † *

Pectinidae Scallop () is a common name that encompasses various species of Marine (ocean), marine bivalve mollusc, molluscs in the Taxonomy (biology), taxonomic Family (biology), family Pectinidae, the scallops. However, the common name "scallop" is also ...

(scallops) * Pleuronectitidae † *

Propeamussiidae Propeamussiidae, sometimes referred to as glass scallops mud scallops or mud pectens, are a Taxonomy (biology), taxonomic family (biology), family of saltwater clams, marine (ocean), marine bivalve molluscs in the order Pectinida. As members of t ...

some are known as glass scallops *

Spondylidae ''Spondylus'' is a genus of bivalve molluscs, the only genus in the family (biology), family Spondylidae and subfamily Spondylinae. They are known in English as spiny oysters or thorny oysters (although they are not, in fact, true oysters, but ...

thorny oysters * Tosapectinidae † ;Families brought into synonymy: * Propeamussidae: synonym of Propeamussiidae * Syncyclonematidae: synonym of Entoliidae

References

* Raines, B. K. & Poppe, G. T. (2006): "The Family Pectinidae". In: Poppe, G. T. & Groh, K.: ''A Conchological Iconography''. 402 pp., 320 color plts., ConchBooks, Hackenheim, . * 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.
Dijkstra H.H. & Maestrati P. (2012) ''Pectinoidea (Mollusca, Bivalvia, Propeamussiidae, Cyclochlamydidae n. fam., Entoliidae and Pectinidae) from the Vanuatu Archipelago.'' Zoosystema 34(2): 389-408. [29 June 2012]

Shell anatomy

Families

References

Further reading