A New History of Life

The Evolution of Jaws (1520x20)

Ημερομηνία προβολής: Ιαν 01, 2013

The first vertebrates were easy targets for killer arthropods and other marine predators. What eventually gave them the upper hand? Trace the circuitous evolution of jaws and the rapid development of fish that followed. Also crucial was the internal skeleton, which has some surprising advantages.