Annelida- Arizona's Tree of Life Web Page. Pictures, characteristics, phylogenetic relationships, references on annelids. Pictures and references on annelids.
Annelida–Introduction- Information on various species of annelids from the University of Paisley.
Introduction to the Annelida- University of California at Berkeley Museum of Paleontology. This site provides an introduction to the annelids. It contains information on annelids in the fossil record and annelid life histories, systematics, and morphology, as well as many links.
Phylum Annelida- Animal Diversity Web, University of Michigan.
The Dissection Lab- A lengthy table which compares various systems of the earthworm, the frog, the snake, the shark, the perch, the pigeon, and the pig. Print this table for future reference in other chapters.