What era the rocks are from and how old the fossils are

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While on a nature hike, you come upon a rock quarry whose shale rock contains fossils of crinoids, brachiopods, and trilobites. Your companion asks you what era the rocks are from and how old the fossils are. In light of this assemblage of fossils, what are your answers?

Reference no: EM131237581

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What era the rocks are from and how old the fossils are : While on a nature hike, you come upon a rock quarry whose shale rock contains fossils of crinoids, brachiopods, and trilobites. Your companion asks you what era the rocks are from and how old the fossils are. In light of this assemblage of fossils..

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