rayed trough-shell

In 1758, in the 10th edition of Systema Naturae, the Swedish scientist and taxonomist Carl Linnaeus described the class "Vermes" as: Animals of slow motion, soft substance, able to increase their bulk and restore parts which have been destroyed, extremely tenacious of life, and the inhabitants of moist places. Many of them are without a distinct head, and most of them without feet. They are principally distinguished by their tentacles (or feelers).

Mactra stultorum (anciennement Mactra corallina), la mactre coralline est une espèce de mollusques bivalves marins de la famille des Mactridae. Description Coquille assez fine, brillante, beige à ocre, atteignant 6 cm de long et garnie de rayures blanches rayonnant du sommet jusqu'au bord de la coquille. À l'intérieur, les valves présentent des zones violettes plus ou moins apparentes.

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