Lasaea rubra
From Wikipedia, the free encyclopedia
| Lasaea rubra | |
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Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Galeommatida |
| Superfamily: | Galeommatoidea |
| Family: | Lasaeidae |
| Genus: | Lasaea |
| Species: | L. rubra |
| Binomial name | |
| Lasaea rubra | |
| Synonyms | |
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Lasaea rubra is a species of small marine bivalve mollusc in the family Lasaeidae. It is found on the eastern side of the Atlantic Ocean. This species was first described in 1803 by the English naturalist George Montagu who gave it the name Cardium rubrum. It was later transferred to the genus Lasaea, making it Lasaea rubra.[1]
This small mollusc has a maximum length of about 3 mm (0.12 in). The shell is oval, thin and fragile, with both valves convex. The umbones are slightly behind the midline, both valves having a single lateral tooth on each side of the hinge with the left valve having in addition, a cardinal tooth. The ligament is internal and passes through a deep groove below the hinge in each valve, and has a broad plate beneath the hind lateral teeth. The valves are finely sculptured with closely spaced concentric lines, and the annual growth rings are clearly visible. Externally, the valves are white with pink or brownish concentric bands, and internally it is white: the adductor scars are large and the pallial line broad but indistinct.[2]