Anodontia philippiana

The chalky buttercup grows to a maximum length of . Both the exterior and interior are white. It is very similar in appearance to the closely related buttercup lucine (Anodontia alba) which occupies the same range as it in the Caribbean area. The chalky buttercup can be distinguished by the fact that the interior of the valves are white rather than yellow and that the scars formed by the anterior adductor muscles slope at an angle of 30° to the pallial line. ==Distribution and habitat==

The chalky buttercup is found in both the Caribbean area It is one of a number of bivalve species to be found in the oxygen-depleted sediments among mangroves. ==Biology==

The chalky buttercup has a symbiotic relationship with certain bacteria that live in its gills. ==Taxonomy==

Traditionally this species was known as Lucina philippiana, the name given to it by Reeve in 1850. Some authorities now refer to it as Pegophysema philippiana and Anodontia schrammi is another synonym. ==References==