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Malleidae, or hammer oysters, is a family of saltwater clams. They are related to the pearl oysters, in the order Pteriida [1] and the superfamily Pterioidea. There are about 22 species in this family. The shells of most of these animals are T-shaped, with the hinge along the top of the T, and with the byssus emerging from the hinge.
Oysters are classified to be a part of the Ostreacea family, in the bivalve class and part of the phylum Mollusca. Oysters are shellfish that are born individually but grow up to build reefs. Oysters are born drifting on tides and are free swimming with a vertical mobility, however their locomotion quickly changes when oyster reefs secrete a smell.
Oyster is the common name for a number of different families of salt-water bivalve molluscs that live in marine or brackish habitats. In some species, the valves are highly calcified, and many are somewhat irregular in shape. Many, but not all oysters, are in the superfamily Ostreoidea.
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Unlike most bivalves, the Olympia oyster's shell lacks the periostracum, which is the outermost coating of shell that prevents erosion of the underlying shell. The color of the oyster's flesh is white to a light olive green. Ostrea lurida oysters lie with their left valve on the substrate, where they are firmly attached. Unlike most bivalves ...
Ostrea edulis Linnaeus, 1758- edible oyster or Belon oyster † Ostrea edwilsoni Stoyanow, 1949 † Ostrea eorivularis Oyama & Mizuno, 1958; Ostrea equestris (Say, 1834)- crested oyster † Ostrea erici Hertlein, 1929 † Ostrea fraasi Mayer-Eymar, 1888 † Ostrea frondosa de Serres, 1829; Ostrea futamiensis Seki, 1929 † Ostrea gajensis ...
The term oyster reef refers to dense aggregations of oysters that form large colonial communities. Because oyster larvae need to settle on hard substrates, new oyster reefs may form on stone or other hard marine debris. Eventually the oyster reef will propagate by spat settling on the shells of older or nonliving oysters. The dense aggregations ...
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