See text Nuculanoida Nuculanida is an order of very small saltwater clams, marine bivalve molluscs in the subclass Protobranchia.

These bivalves are distinguished by the presence of relatively primitive, "protobranchiate" gills.

There are a row of short teeth along the hinge of the shell.

[1] Families within the order Nuculanida include:

This bivalve-related article is a stub.