Audience: Students; Grades: 9-12; Science.Paleontologist, Simon Braddy, introduces the fossil remains of arthropods, the first and most diverse group of animals that ever lived on earth. He and the narrator identify arthropods' jointed legs, antennae, complex eyes, claws, and exoskeleton. Biologist, Bill Shear, identifies the tools needed for arthropods to make the transition to land: the exoskeleton and appendages, and the environmental conditions necessary for the transition: beds of algae and the evolution of land plants. Goes on to explain that arthopod respiratory systems developed next and that arthropods also developed predatory habits, the ability to survive on detritus, and metamorphosis, an imitation of their evolutionary past. Views the ability to fly, to pollinate plants, and to live in extreme environments, as the latest adaptations of arthropods. For Teacher's Guides go to: https://drive.google.com/folderview?id=0B9ZT7PYcIjLffk5QOEpyUGs2NnQ3cjRETGlnZHB3RjN3VkRrSC1wZWxUQ3pwWGFxRV9lYlU&usp=sharing