Ostracods are small crustaceans enclosed in a bivalved carapace.    From Wordnik.com.  [Crustacea] Reference

Of the rest, some are bivalved and some univalved; and by ‘bivalves’ I mean such as are enclosed within two shells, and by.    From Wordnik.com.  [The History of Animals] Reference

The flowers are variable in color, and produced in loose clusters; the seeds are produced in long, flattened, or cylindrical, bivalved pods, and vary, in.    From Wordnik.com.  [The Field and Garden Vegetables of America Containing Full Descriptions of Nearly Eleven Hundred Species and Varietes; With Directions for Propagation, Culture and Use.] Reference

The seed, reniform in shape, is bivalved, and constitutes about two-thirds of the bulk of the entire plum, and the inner kernel two-thirds the bulk of the seed.    From Wordnik.com.  [Scientific American Supplement, No. 365, December 30, 1882] Reference

For on their dorsal surface they have a shell, and by the under surface they attach themselves to the rocks, and so after a manner become bivalved, the rock representing the second valve.    From Wordnik.com.  [On the Parts of Animals] Reference

Their bodies are completely enclosed in a calcified, bivalved carapace which is hinged dorsally.    From Wordnik.com.  [Featured Articles - Encyclopedia of Earth] Reference

A woody seed-vessel, bivalved, ovate, glabrous, with a small seed ending in an oval wing; all these seed vessels joined form a small cone about 1 'long.    From Wordnik.com.  [The Medicinal Plants of the Philippines] Reference

The shell may be bivalved.    From Wordnik.com.  [Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901] Reference

"native" from his bivalved citadel.    From Wordnik.com.  [Lippincott's Magazine of Popular Literature and Science Volume 17, No. 097, January, 1876] Reference