Bivalvia - Wikipedia As a group, bivalves have no head and lack some typical molluscan organs such as the radula and the odontophore Their gills have evolved into ctenidia, specialised organs for feeding and breathing
Bivalves - Types, Examples, Characteristics, Anatomy, Diet, Habitat Bivalves are a group of freshwater and marine mollusks with bilaterally symmetric and laterally compressed bodies encased in a characteristic two-part shell They belong to the class Bivalvia, a term coined by Linnaeus (1758) from two Latin words, bis (two) and valvae (leaves of a door)
Bivalvia | INFORMATION | Animal Diversity Web - ADW Also known as pelecypods, the approximately 15,000 species of this taxon are found in marine and freshwater habitats throughout the world A bivalve is characterized by possessing two shells secreted by a mantle that extends in a sheet on either side of the body
Class Bivalvia - Digital Atlas of Ancient Life Phylum Mollusca, Class Bivalvia Common names of representatives: clams, scallops, oysters, mussels Habitat (s): marine (salt water), freshwater (lakes, rivers, and streams) Feeding type (s): mostly suspension feeders; some deposit feeders and carnivores Geological range: Cambrian to today
Bivalve - New World Encyclopedia Bivalves are aquatic mollusks belonging to the class Bivalvia (or Pelecypoda), a group that includes the familiar and economically important clams, oysters, scallops, and mussels
Bivalve Mollusks - Characteristics, Habitat, and Examples There are approximately 13,000 species worldwide, and they are classified under the class Bivalvia, reflecting their characteristic two-valved shells They belong to the phylum Mollusca
Bivalve - Mollusks, Shells, Filter Feeders | Britannica Class Bivalvia has about 8,000 extant species divided into six subclasses: Palaeotaxodonta (Protobranchia), Cryptodonta, Pteriomorphia, Palaeoheterodonta, Heterodonta, and Anomalodesmata