Wikimedia
Wikipedia: Arthropod
Wikipedia offers information on arthropods, the largest phylum of animals. Includes scientific classification chart and image.
Scholastic
Scholastic: Science Explorations: Uncover Lizards and Snakes
An exploration of squamates, or scaled reptiles. Take notes about lizards and snakes using the pdf "Squamate Chart" while viewing a slideshow, investigate the squamate anatomy and how squamates differ from other animals, such as insects...