class Bivalvia


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Related to class Bivalvia: class Cephalopoda, class Gastropoda, Pelecypoda
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Synonyms for class Bivalvia

Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The best know elements of the fauna are the freshwater mussels belonging to the family Unionidae (Class Bivalvia).
-- Unidentified polychaeta 0.27 Phylum Platyhelminthes 0.80 Phylum Mollusca 1.81 Class Bivalvia 1.60 Class Gastropoda 0.27 Phylum Brachiopoda 0.80 Phylum Cnidaria * Class Scyphozoa - Aurelia ap.
The early phylogeny of the class Bivalvia. Palaeontology 40: 713-746.
According to Nakamura (1985), 2n = 38 is the most frequent chromosome number in the class Bivalvia (40% of the reported 125 species).
A total of 41 species were found (Table 1) corresponding to 31 genera and 19 families, of which 75.6% belonged to the class Gastropoda, 17.1% to the class Bivalvia, and 7.3% to the class Polyplacophora.
The class Bivalvia showed the highest density in June and the lowest in September (Table 2).
A total of 33 species (Table 1) were found corresponding to 28 genera and 20 families, of which 78.8% belonged to the class Gastropoda, 18.2% to the class Bivalvia and 3.0% to the class Polyplacophora.
The densities of the class Gastropoda were higher than those of the classes Bivalvia and Polyplacophora in the samples from June and September, whereas the class Bivalvia showed higher densities than those of the classes Gastropoda and Polyplacophora in samples from December of 2000 and March and December of 2001.
The radula is one of the most characteristic organs of the phylum Mollusca, lacking only in the class Bivalvia. The function of the radula is to obtain food.