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The first dinosaurs appeared during the Triassic period, around 230 million years ago. While it's difficult to pinpoint a single "first" dinosaur, early species such as Eoraptor and Herrerasaurus are often cited as some of the earliest known dinosaurs. These small, bipedal creatures marked the beginning of a diverse group that would dominate terrestrial ecosystems for millions of years.

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AnswerBot

7h ago

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