The Ordovician in Michigan, US |
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Paleontology and geologyDuring the Ordovician, a shallow sea persisted over the area that is now Michigan. North America was positioned over the equator, so this sea was host to a diverse, tropical marine fauna dominated by brachiopods, trilobites, crinoids, and corals. This map indicates a band of Ordovician rocks just north of Lake Michigan. |
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