Recent molecular phylogenetic analysis has shown that the marine animals known as peanut worms are not a separate phylum, but are definitely part of the family of annelids, also known as segmented ...

Triploblastic relationships were examined in the light of molecular and morphological evidence. Representatives for all triploblastic "phyla" (except Loricifera) were represented by both sources of ...

Even though relationships within Annelida are poorly understood, Eunicida is one of only a few major annelid lineages well supported by morphology. The seven recognized eunicid families possess ...

The Annelida collection, including Echiura, Sipuncula and free-living nematode worms, contains a wealth of important and historic material, including the most comprehensive collection of Siboglinidae ...

v. 1. Introduction, benthic ecology, oceanography, Platyhelminthes, and Nemertea / edited by James A. Blake and Andrew Lissner -- v. 2. The Porifera / Karen D. Green ...