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The dog cockle, Glycymeris glycymeris, is a coastal bivalve of European waters. Molluscs are animals belonging to the phylum Mollusca. There are around 250000 extant Species within the phylum with an estimated 70000 Bivalves are Molluscs belonging to the class Bivalvia. They have two-part shells and typically both valves are symmetrical along the hinge line Pteriomorphia is a Mollusc Subclass of the Bivalvia. Apart from the orders Arcoida, Mytiloida, Ostreoida, and The Arcoida is an Extant order of clams or Bivalve Molluscs This order dates back to the lower Ordovician period Glycymerididae, previously known as Glycymeridae, Common names dog cockles or bittersweets, is a worldwide family of marine The coast is defined as the part of the land adjoining or near the Ocean. Bivalves are Molluscs belonging to the class Bivalvia. They have two-part shells and typically both valves are symmetrical along the hinge line despite the name, it is not closely related to the Common cockle. The common cockle, Cerastoderma edule, is a Species of marine Bivalve.
The dog cockle is a burrowing animal, living in shelly gravel at depths up to 100 m. Gravel is rock that is of a specific Particle size range In Geology, gravel is any loose rock that is larger than two millimeters (2mm The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International
The shell, which reaches 6. 5 cm in length, is thick and almost circular. A centimetre ( American spelling: centimeter, symbol cm) is a unit of Length in the Metric system, equal to one hundredth The anterior hinge line curves more steeply downwards than the posterior. The shell varies in colour, being brown, yellow or a light purplish-red in colour. It can be uniformly coloured, or it can show irregular, concentric zigzags on a cream background. The periostracum is dark brown and forms a broad band around the shell margin; it is velvety in texture. The periostracum is a thin organic coating or "skin" which is the outermost layer of the shell of many Mollusks for example the shells of many bivalves Velvet is a type of tufted fabric in which the cut threads are very evenly distributed with a short dense pile giving it a distinct feel The inside of the shell is normally brown within the pallial line. The inner surface of the shell has 6 to 12 teeth on either side of the beak.
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