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bivalve - Encyclopedia Britannica
bivalve, (class Bivalvia), any of more than 15,000 species of clams, oysters, mussels, scallops, and other members of the phylum Mollusca characterized by a shell that is divided from front …
Bivalves - Types, Examples, Characteristics, Anatomy, Diet, & Habitat
2024年5月31日 · Evolution. Bivalves evolved during the Cambrian Explosion (540 to 520 million years ago) as the first creatures with mineralized skeletons, along with brachiopods.Around …
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