Scientist have discovered many fossils of dinosaurs. However, they have not discovered any dinosaur's fossils in rock layers that are younger than
65 million years old. What conclusion can be drawn from this evidence?

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Explanation:

Discover what scientists can learn by studying fossils and how these fossils ... A fossil is any evidence of prehistoric life (plant or animal) that is at least 10,000 years old. The most common fossils are bones and teeth, but fossils of footprints and ... Over millions of years, water in the nearby rocks surrounds these hard parts

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