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The taxonomic term Bivalvia was first used by Linnaeus in the 10th edition of his Systema Naturae in 1758 to refer to animals having shells composed of two valves. [3] More recently, the class was known as Pelecypoda, meaning "axe-foot" (based on the shape of the foot of the animal when extended).
Trigoniidae is a taxonomic family of saltwater clams, marine bivalve mollusks in the superfamily Trigonioidea.There is only one living genus, Neotrigonia, but in the geological past this family was well represented, widespread and common.
Ostreoidea is a taxonomic superfamily of bivalve marine mollusc, sometimes simply identified as oysters, [1] containing two families. The ostreoids are characterized in part by the presence of a well developed axial rod. [2]
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. [8] However, the following taxonomy represents the current accepted arrangement of this subclass according to the World Register of Marine Species [ 9 ]
Protobranchia is a subclass of bivalve molluscs. [1] It contains the extant orders Nuculanida, Nuculida, and Solemyida.. These are deep water clams of a small and primitive order with a taxodont hinge (composed of many similar, small teeth), generally with a central ligament pit, large labial palps which are used in deposit feeding and the gills used only for respiration, the anterior and ...
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Margaritiferidae is a family of medium-sized freshwater mussels, aquatic bivalve molluscs in the order Unionida. [1] [2] It is the most threatened of all unionid families.[3]The family is sometimes referred to as the freshwater pearl mussel family, [4] but "freshwater pearl mussel" more often applies to the species Margaritifera margaritifera.
Perna perna, the brown mussel, is an economically important mussel, a bivalve mollusc belonging to the family Mytilidae.It is harvested as a food source but is also known to harbor toxins and cause damage to marine structures.