Animal Evolution is a complete analysis of the evolutionary interrelationships and myriad diversity of the animal kingdom. Using modern phylogenetic reasoning based an extensive review of morphology, including ultrastructure, and embryology, each phylum is analysed to ascertain its monophyly and hence its ancestral characters. These characters are then used to construct a complete phylogenetic tree of the extant animal phyla. This new edition of Animal Evolution brings the subject fully up to date with new ideas and emphases, as well as new bibliographic data. It includes new chapters on the use of computer programmes and molecular techniques to create phylogenies, Illustrated throughout with finely detailed line drawings and clear diagrams.