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Bivalvia (/ b aɪ ˈ v æ l v i ə /) or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed by a calcified exoskeleton consisting of a hinged pair of half-shells known as valves.
Velesunio wilsonii come from one of two classes of molluscs that have successfully inhabited freshwater ecosystems. [1] All other mollusc classes remain in marine ecosystems. [1] Bivalve molluscs evolved in marine ecosystems before slowly moving into estuaries and inhabiting upstream freshwater habitats, evolving to tolerate lower salinity ...
Freshwater bivalves are molluscs of the order Bivalvia that inhabit freshwater ecosystems. They are one of the two main groups of freshwater molluscs , along with freshwater snails . The majority of bivalve molluscs are saltwater species that live in the marine habitats , but a number of families have evolved to live in fresh water (and in some ...
An assortment of shells of marine bivalves and a few marine gastropods found on a beach in Wales In May 2010, a new taxonomy of the Bivalvia was published in the journal Malacologia . The 2010 taxonomy is known as the Taxonomy of the Bivalvia (Bouchet, Rocroi, Bieler, Carter & Coan, 2010) [ citation needed ] .
Murphy, Richard C. 1971. The structure and ultrastructure of the pineal organ of the bluefin tuna, Thunnus thynnus. J. Morph. 133(1):1-16. Murphy, Richard C. 1983. The introduced bivalve, Mercenaria mercenaria in a shallow coastal ecosystem: 1) Factors affecting its distribution, 2) Contribution to benthic community metabolism. Ph.D. Dissertation.
One bivalve group, the rudists, became major reef-builders in the Cretaceous, but became extinct in the Cretaceous–Paleogene extinction event. [26] Even so, bivalves remain abundant and diverse. The Hyolitha are a class of extinct animals with a shell and operculum that may be molluscs.
He was the lead author on a revised classification for all bivalves, [12] see Taxonomy of the Bivalvia (Bouchet, Rocroi, Bieler, Carter & Coan, 2010), and on major work providing a new hypotheses of the branching pattern in the Bivalve Tree of life (biology) based on both morphological-anatomical and molecular data. [13]
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