This expanded and updated second edition offers a comprehensive look at macroevolution. From a Neodarwinian viewpoint, it integrates evolutionary processes at all levels to explain animal diversity. It examines topics including genetics and speciation, development and evolution, the constructional and functional aspects of form, fossil lineages, systematics, and the Cambrian explosion.

Expanded and updated second edition comprehensively looks at macroevolution, integrating evolutionary processes at all levels to explain animal diversity.