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Keyword: cladistics

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  • In Search of Deep Time: Beyond the Fossil Record to a New History of Life

    06/09/2003 9:42:52 AM PDT · by FairWitness · 22 replies · 5,576+ views
    Book | 1999 | Henry Gee
    Why did the dinosaurs become extinct? Why did fishes evolve legs and learn to walk on land? How did birds become airborne? Is humanity the culmination of evolution? Apart from their perennial fascination, questions like these--evolutionary questions, about 'how' and 'why'--are united by an implication of a narrative in which cause and effect are linked: dinosaurs became extinct because of the after-effects of an asteroid impact, or because they were rendered obsolete by mammals. Chains of cause and effect may also be animated by purpose: fishes evolved legs for walking on land; birds evolved feathers for flight; human beings evolved...