In 1735, Carolus Linnaeus published the first edition of his Systema Naturae, which set forth his system for classifying all living things. It has been in use ever since. Scientists now estimate that living animals account for less than one-tenth of one percent of all that have ever lived. They maintain that the Linnaeus system is the “tail wagging the dog,” as it does not adequately provide for the far more abundant extinct prehistoric species. They have replaced it with the new cladistics classification system. It uses phylogenetic systematics  to classify animals by physical changes in an evolution tree organization. Traditional phyla, orders, families. etc. have been replaced by clades.
     This revolutionary new way of looking at animal life is presented in a series of three extraordinary, cutting-edge posters. Animal Development and Milestones of Vertebrate Evolution explore and explain the underlying system. The all-new Animal Kingdom 2 shows the results.
     Each of these three posters is self-contained and may be used independently of the others, but they also complement one another and are most effective when used together. They provide an invaluable, quickly accessible reference to educators, students, professionals and others who are curious about the world in which we live.