Audience: Students; Grades: 9-12; Science. (2003) Paleontologist, Whitney Hagadorn, presents the fossil evidence that 565 million years ago, flatworms were the first animals to be able to move under their own direction and to develop bilateral symmetry. Examines the flatworm's central nervous system, eyes, sense organs and its muscular organization. Explains how these evolutionary traits enabled animals to become hunters. Also examines the anatomy of the flatworm, and the reproductive capacity of the tapeworm. Follows Leslie Newman's discovery of many new species of flatworms in the Great Barrier Reef. Also films these flatworms' reproductive battle. Expands our understanding of this stage of evolution by demonstrating how hox genes determine inherited traits in fruitflies as they do in flatworms. For Teacher's Guides go to: https://drive.google.com/folderview?id=0B9ZT7PYcIjLffk5QOEpyUGs2NnQ3cjRETGlnZHB3RjN3VkRrSC1wZWxUQ3pwWGFxRV9lYlU&usp=sharing