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Anomioidea

Anomioidea
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Pectinoida
Superfamily: Anomioidea
Families

Anomiidae
Placunidae


Anomiidae
Placunidae

The Anomioidea are a superfamily of marine bivalve molluscs that include two families, the Anomiidae and the Placunidae, the jingle shells and saddle shells. They are mainly sessile bivales that superficially resemble true oysters (partially in that they cement themselves to a substrate). Though they are , however, the Anomioidea attach via their right valve rather than the usual left. Their irregular shells are inequilateral, are round to oval, with a large byssal notch. The byssus itself is usually short and plug-like. The left valve is convex, and the hinge is considered .


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Wikipedia

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