"Blue-blooded crabs? Platypus that sting? One-hundred-year old reptiles? Meet some of nature's longest-surviving species! Discover the stories of these incredible animals and find out how they help scientists piece together evolutionary history."--

Introduces "living fossils, or modern-day animals that very closely resemble their ancient relatives. Meet the coelacanth, horseshoe crab, dragonfly, tuatara, nautilus, and Hula painted frog. All are living fossils. Why have they changed so little over time, while other animals evolved or went extinct?"--Amazon.com.