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Paleontology and geologySome of the oldest rocks in North America are exposed in Michigan’s Upper Peninsula. These metamorphic and igneous rocks are the remnants of mountain ranges raised during the Precambrian collision of landmasses that formed the beginnings of the North American continent. Partially metamorphosed sedimentary rocks from 2.1 billion years ago contain fossil evidence of the earliest eukaryotes (organisms whose cells have a nucleus), a filamentous alga called Grypania spiralis. |
Links to more on the Precambrian in Michigan |
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Image Collections (showing 1 of 1 listings)
Michigan Basin Specimen Database: This site showcases Michigan Basin fossils from the private collections of Friends of the University of Michigan Museum of Paleontology and select specimens from the University of Michigan collection, including type specimens.
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