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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.
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.
Life in Michigan's Cambrian seas included some brachiopods, cephalopods, gastropods, and trilobites. Trilobites would become more common in Michigan as the Paleozoic progressed. [1] During the ensuing Ordovician, Michigan remained inundated by seawater. [2] Brachiopods flourished and are among the most common fossils of the period in Michigan. [1]
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 ...
Geologic map of the Michigan Basin. The Michigan Basin is a geologic basin centered on the Lower Peninsula of the U.S. state of Michigan.The feature is represented by a nearly circular pattern of geologic sedimentary strata in the area with a nearly uniform structural dip toward the center of the peninsula.
Corals were the most common animals found in Devonian Michigan. There were three types of coral found in Devonian Michigan: branching, colony, and solitary corals. These corals are found as fossils in almost every fossil site in Michigan. This is because the Devonian was a time of great reefs, which covered most of the world's oceans.
Long Lake Limestone: Location; Region Michigan: Country United States: The Alpena Formation is a geologic formation in Michigan. It preserves fossils dating back to ...