Parallelodontidae

Parallelodontidae is a family of saltwater clams, marine bivalve molluscs that are related to the ark clams. This family contains at least four genera.

Species
Species within the family Parallelodontidae includes:
 * Grammatodon
 * Parallelodon
 * Parallelodon rugosus
 * Pleurogrammatodon
 * Porterius
 * Porterius dalli