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Paleozoic rocks in eastern Wisconsin today make up the Niagara Escarpment, a shelf of rock extending from Door County to Horicon Marsh. The cliffs along the escarpment are primarily formed by the early Silurian Mayville Dolostone; the rocks that make up the escarpment were deposited within the Michigan Basin. Continued subsidence of this basin ...
Paleontology in Wisconsin refers to paleontological research occurring within or conducted by people from the U.S. state of Wisconsin. The state has fossils from the Precambrian, much of the Paleozoic, some parts of the Mesozoic and the later part of the Cenozoic. Most of the Paleozoic rocks are marine in origin.
This list of the Paleozoic life of Wisconsin contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Wisconsin and are between 538.8 and 252.17 million years of age.
Autumn in the Driftless Area of Cross Plains, Wisconsin. The Driftless Area, also known as Bluff Country and the Paleozoic Plateau, is a topographical and cultural region in the Midwestern United States [1] that comprises southwestern Wisconsin, southeastern Minnesota, northeastern Iowa, and the extreme northwestern corner of Illinois.
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This list of the prehistoric life of Wisconsin contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Wisconsin. Precambrian [ edit ]
The greenish rock under the concrete block at top center is the base of the Brainard and is dominantly a sticky green shale with thin beds of purplish gray dolomite. Above the Fort Atkinson is the Brainard Formation. The Brainard is generally a greenish gray to gray dolomitic soft to hard shale. It contains abundant fossils near the base. It ...
Soldiers' Home Reef was formed during the Silurian period of the Paleozoic Era, about 400 million years ago, when Wisconsin lay under a shallow tropical sea.Beneath that sea, ancient corals constructed the reef where trilobites, cephalopods, brachiopods, pelmatozoans, bivalves, and bryozoans lived and were eventually preserved as limestone.