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A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized rugose coral, Hexagonaria percarinata. [1] Such stones were formed as a result of glaciation, in which sheets of ice plucked stones from the bedrock, grinding off their rough edges and depositing them in the northwestern (and some in the northeastern) portion of Michigan's lower peninsula.
The most common mammals in Michigan's Pleistocene fossil record were caribou, elk, Jefferson mammoths, American mastodons, and woodland muskoxen. Less common members of Michigan's fossil record included black bears, giant beavers, white-tailed deer, Scott's moose, muskrats, peccaries, and meadow voles. [10]
Download QR code; Print/export ... Long Lake Limestone: ... United States: The Alpena Formation is a geologic formation in Michigan. It preserves fossils dating back ...
This list of the prehistoric life of Michigan contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Michigan. Precambrian [ edit ]
This list of the Paleozoic life of Michigan contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Michigan and are between 538.8 and 252.17 million years of age.
The Rockport Quarry Limestone is a geologic formation in Michigan. It preserves fossils dating back to the middle Devonian period . Stratigraphy of the Devonian deposits of the northern part of the Lower Peninsula of Michigan, showing the Rockport Quarry Limestone [ 1 ]
The American Mastodon is not only a spectacular fossil found in southern Michigan, but is Michigan's state fossil. It is believed that these animals fed on trees, and lived in herds, much like modern elephants. Along with mammoths, specimens of mastodons with marks from stone tools have been found, which means that they were probably hunted.
Fossils of this genus form Petoskey stones, the state stone of Michigan. [1] They can be seen and found in most Midwestern U.S. states. Hexagonaria is a common constituent of the coral reefs exposed in Devonian Fossil Gorge below the Coralville Lake spillway [2] and in many exposures of the Coralville Formation in the vicinity of Coralville ...