Spisula

bivalve genus

Learn about this topic in these articles:

In bivalve: Internal features
The burrowing Spisula illustrates these changes. It, like Nucula, is equivalve and anteriorly and posteriorly symmetrical (isomyarian). The mantle margin is fused ventrally, allowing the foot to extend through an anterior pedal gape. The posterior inhalant and exhalant orifices are formed into tentacle-fringed siphons. The gills are…
Read More