Among the more frequently encountered species in this phylum are Arinicola, Nereis, and Cistenides.
Among the more frequently encountered species in this phylum are Arinicola, Nereis, and Cistenides. The approximately 8,600 species in it are grouped into three classes including hirudineans, oligochaetes, and polychaetes. Members' bodies consists of an unsegmented terminal section, a head, and a trunk composed of metameres. FTP, name this phylum that includes leeches and earthworms.
Among the more frequently encountered species in this phylum are Arinicola, Nereis, and Cistenides.
{annelids} or {annelida}