Pholadidae

Pholadidae

[fō′lad·ə‚dē]

(invertebrate zoology)

A family of bivalve mollusks in the subclass Eulamellibranchia; individuals may have one or more dorsal accessory plates, and the visceral mass is attached to the valves in the dorsal portion of the body.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pholadidae

 

a family of bivalve mollusks. The shell, which measures as much as 10–12 cm in length, does not enclose the entire body. It lacks a hinge and ligament, its valves being joined only by muscles. The valves are often supplemented by plates. The anterior parts of the valves are covered with denticles that resemble the teeth of a file.

The family comprises approximately 30 genera, which are widely distributed in the world’s oceans. The seas of the USSR have approximately ten species, including Pholas dactylus in the Black Sea and Zirfaea crispata and Penitella penita in Far Eastern seas. Together with other marine organisms, the Pholadidae comprise the group of stone borers. They live in burrows, which they dig with the denticles of their shells in dense slime, marl, limestone, or coral. They occasionally bore into wood and may damage port structures.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.