An updated classification of the phylum Nemertea

Abstract

A higher-level classification of Nemertea has been updated based on insights from recent phylogenetic studies. According to this classification, the phylum includes two superclasses (Pronemertea and Neonemertea), three classes (Palaeonemertea, Pilidiophora, and Hoplonemertea), and eight orders. The order Arhynchonemertea is considered as an incertae sedis taxon. For all taxa above the family level, diagnoses and synapomorphies are provided.