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Bivalve - Anatomy and evolution Britannica

Webbivalve, (class Bivalvia), any of more than 15,000 species of clams, oysters, mussels, scallops, and other members of the phylum Mollusca characterized by a shell that is divided from front to back into left and right valves. The valves are connected to one another at a hinge. Primitive bivalves ingest sediment; however, in most species the respiratory gills … WebDec 18, 2007 · The term freshwater bivalve is very inclusive and not very informative. There are representatives of at least 19 families that have at least one representative living in freshwater. This suggests at least 14 different invasions of freshwater. At least nine families have small to large radiations in the freshwater environment: Corbiculidae, Sphaeriidae, … homestyle aged care careers

Class Bivalvia: The Wonders of Bivalves, Their Shells & Anatomy

WebJan 26, 2001 · 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. WebTrace Fossils are clues the organism existed such as footprints, tracks, burrows and coprolites (fossil dung). The class: Bivalvia meaning “two valves or shells” are classified under the Kingdom: Animalia and Phylum: Mollusca. The group includes modern and fossil members of the groups commonly called pectin, lima, oysters, mussels, and clams. WebAV&V Black Tulip Extreme Duty Valves (6MM) These superb valves feature the highest flow level on the market. They are one piece forged from a racing grade stainless steel … homes tustin ca