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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]
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.
Fossil of the Carboniferous horsetail relative Annularia †Annularia †Annularia asteris †Annularia sphenophylloides †Athyris †Atrypa †Atrypa traversensis †Aulopora †Aulopora microbuccinata †Bellerophon †Calamites †Calamites carinatus †Calamites cistii †Calamites ramosus †Calamites schutzeiformis †Calamites suckowii
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 ...
Millions of years ago, the near-Canada region was an environment comparable to modern-day Florida, abundant with prehistoric turtles, fish, crocodiles and, of course, the king of the dinosaurs ...
Long Lake Limestone: Location; Region Michigan: Country United States: The Alpena Formation is a geologic formation in Michigan. It preserves fossils dating back to ...
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