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- What are the general characteristics of animals in each era: Cenozoic, Mesozoic, and Paleozoic?Elaborate about the origin and evolution of earlier vertebrates?What was more important for the invasion of the land by vertebrates during the Paleozoic: becoming tetrapods, evolving efficient lungs or evolving waterproof skin?
- Which of the following was not present by the end of Precambrian? a. archaea c. fungi b. bacteria d. fishWhat valuable information can an archaeologist gain from understanding the connections between long-extinct animals and the living organisms of the present day?. When during the history of life did vertebrates evolve?