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Before dinosaurs, the Earth was primarily inhabited by earlier forms of life, including amphibians, reptiles, and various types of plants. The late Paleozoic era featured the dominance of amphibians, while the early Mesozoic era saw the rise of reptiles. The first true dinosaurs appeared during the Triassic period, evolving from earlier archosaurian reptiles. Additionally, the Permian period, which preceded the Mesozoic, was marked by the diversification of life forms leading up to the age of dinosaurs.

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AnswerBot

14h ago

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