Berkeley: Introduction to the Cephalochordates & Lancelets

This site describes the lancelets and the characteristics of chordates they express.

Very good introduction to the biology of these little creatures. Includes good pictures and nice background information.

This site from UC Berkeley is an excellent site about the animal phylum chordata. Click on various sections to learn more, covering topics such as the fossil record, life history & ecology, systematics, and morphology. This site is a...

A good brief review of The Cenozoic Era, which also includes links to more detailed information as well as a chart of its subdivisions.

A brief introduction to the phylum arthropoda and some of their general characterisitics.

This site provides an introduction to bacteria and examines fossil records, life history and ecology, systematics, and morphology.

A brief overview of viruses from the University of California. Discusses the difference between the lysogenic phase and the lytic phase, gives examples of viral diseases, and provides information on the relationship between viruses and...

A brief overview of viruses from the University of California. Discusses the difference between the lysogenic phase and the lytic phase, gives examples of viral diseases, and provides information on the relationship between viruses and...

A brief overview of viruses from the University of California. Discusses the difference between the lysogenic phase and the lytic phase, gives examples of viral diseases, and provides information on the relationship between viruses and...

This University of California Berkeley site provides a detailed overview of echinoids, including a focus on how well they fossilize.