The University of California Museum of Paleontology's Web site includes this section on the phylogenetic relationships that connect diverse life forms. The highlight of the site is the online exhibit The Phylogeny of Life, which contains many great images and photos to enhance the text. Without a specific navigational path, visitors can view the information in what ever pattern and level of detail...

Available free from Scientific American's Website, this article takes a thorough and fascinating look at the marine reptiles known as Ichthyosaurs that lived during the Mesozoic Era. The text covers recent discoveries about the evolution of Ichthyosaurs from land dwelling reptiles, including limb adaptations. Highlights of the article are special sections about ichthyosaur eyes and diet, and color...