Heteroconchia

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Heteroconchia is a taxonomic infraclass of diverse bivalve molluscs, belonging to the subclass Autobranchia.[1]

This infraclass includes the cockles, Venus clams,[1] the freshwater mussels, brooch clams, as well as Heterodonta and Archiheterodonta.[2]

Description

These bivalves are distinguished by having the two halves of the shell equally sized (i.e, they are equivalved) and having a few cardinal teeth separated from a number of long lateral teeth. Their shells lack a nacreous layer, and the gills are lamellibranch in form. Most species have a siphon.[3]

Orders and families

The following tree is their info which has been updated with the latest information from the World Register of Marine Species:[1]

Infraclass: Heteroconchia

References

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  5. Giribet G. 2008. Bivalvia. Pp. 105–141, in: Ponder W.F. & Lindberg D.L. (eds), Molluscan Phylogeny. Berkeley: University of California Press, xi+469 pp.
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