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Snapshot: Bivalvia. 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.
The Bivalvia. Lophotrochozoa : Mollusca. Scallops, clams, mussels, and more. No. of described species: 10,000. First appearance: Lower Cambrian. Habitats: marine, estuarine, and freshwater. Shapes: mostly two-shelled; some worm-like. Feeding types: mostly suspension feeders; some detritivores.
Class Bivalvia: Introduction and Morphology. – 1. Bivalve Phylogeny and Classification. – 2. Bivalve Ecology and Paleoecology. – 3. Evolutionary History of Bivalves ←. – 4. References and Further Reading. Image above: A fossil scallop (Pectinidae) from the Eocene Ocala Limestone of Florida.
What is a bivalve mollusk? Bivalve mollusks (e.g., clams, oysters, mussels, scallops) have an external covering that is a two-part hinged shell that contains a soft-bodied invertebrate. A roughfile clam from the Flower Garden Bank National Marine Sanctuary—just one of many different bivalve mollusk species.
Jan 26, 2001 · ADW: Bivalvia: INFORMATION. Bivalvia. 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 →. Bivalve Ecology and Paleoecology. Chapter contents: Class Bivalvia: Introduction and Morphology. – 1. Bivalve Phylogeny and Classification. – 2. Bivalve Ecology and Paleoecology ←. – 3. Evolutionary History of Bivalves. – 4. References and Further Reading.
Contents. Home Science Bugs, Mollusks & Other Invertebrates Mollusks. Ecology and habitats. The division and lateral compression of the shell into two valves is clearly related to the adoption of a burrowing mode of life, which is achieved by a muscular foot.
