Other
University of Aberdeen: The Phyla of Kingdom Animalia
Very systematic breakdown of the animal kingdom starting with the simplest type the sponge, all the way to the chordate or vertebrate. Each phylum has a link with information.
University of California
Ucmp: Annelids Life and History
Description of the life history and ecology of Annelids.
ClassFlow
Class Flow: Classifying Invertebrates
[Free Registration/Login Required] This is a lesson on classifying invertebrates based on their observable features. It focuses on the three types of worms: flatworm, roundworm, and segmented worm. The lesson contains 3 videos as well as...
University of California
Ucmp: Annelids
Describes what segmented worms are and gives a brief description of thier evolution through the use of their fossil record.
University of Michigan
Animal Diversity Web: Subclass Hirudinea [Leeches]
This resource gives a brief description of the subclass Hirudinea and the role they have played in medicine.
Other
Tampa Bay Business Journal: Leeches and Maggots and Medicine, Oh My!
This brief article explains how leeches are used in microsurgery to assist in the reattachment of body parts.
Mocomi & Anibrain Digital Technologies
Mocomi: Earthworm Facts and Information
Learn where earthworms live, how they are useful to the environment, and other interesting fun facts.
Saint Louis Zoo
Saint Louis Zoo: Earthworms
Discover basic facts about the earthworm, also known as the nightcrawler.
Saint Louis Zoo
Saint Louis Zoo: Medicinal Leech
Discover fun facts and learn about the medicinal uses of leeches.