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Tellina fabula
''Tellina fabula'' is a species of marine bivalve mollusc in the family Tellinidae. It is found off the coasts of north west Europe where it lives buried in sandy sediments.
Bivalves are molluscs with a body compressed between two usually similar shell valves joined by an elastic ligament. There are teeth at the edge of the shell and the animal has a muscular foot, gills, siphons, mouth and gut and is surrounded by a mantle inside the shell.
==Description==
The shell of ''Tellina fabula'' is brittle and flattened and grows to a length of twenty millimeters. The outline is oval but the shell is asymmetric with the hinge slightly off centre and the beaks slightly behind the midline. The anterior dorsal margin curves gently and the anterior margin is rounded. The posterior dorsal margin is straighter and the posterior margin is somewhat pointed. The periostracum is transparent and glossy and the shell is white with tinges of yellow or brown. There is a sculpture of fine concentric lines on both valves and some faint radial ribs on the right valve only.〔(Marine Bivalve Shells of the British Isles. )〕 The inner surface of the valves is white, sometimes tinted with yellow or orange.〔 The mantle is white with a fringe of tentacles and the gills are unequal in size.〔(Marine Species Identification Portal )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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