general/errantia

Subclass of annelid worms

Genus of annelid worms

Order of annelid worms

Subclass of annelid worms

Subclass of annelid worms

Subclass of annelid worms

Errantia is a diverse group of marine polychaete worms in the phylum Annelida. Traditionally a subclass of the paraphyletic class Polychaeta, it is currently regarded as a monophyletic group within the larger Pleistoannelida, composed of Errantia and Sedentaria. These worms are found worldwide in marine environments and brackish water.