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The Ordovician in Kentucky, US

Ordovician in Kentucky map

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Ordovician Fossils
Fossil photos from Ordovician in Kentucky

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Paleontology and geology

Warm, shallow seas covered Kentucky, depositing carbonate sediments under conditions similar to those in tropical areas today. Bryozoans, brachiopods, and crinoids dominated the abundant and diverse marine communities living in the sea. Other Ordovician fossils include conodonts, trilobites, bivalves, sponges, and unusual echinoderms such as edrioasteroids. Widespread, thin volcanic ashes and layers contorted and disturbed by earthquakes are evidence of distant mountain building in the northern Appalachians. The Ordovician ended with a drop in sea level as glaciers formed in polar regions, drawing water from the seas. This drop in sea level left more land exposed and resulted in greater erosion of older rocks around Kentucky.

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Organizations | Research and Collections | Resources


Societies and Clubs (showing 1 of 1 listings)

KYANA Geological Society - Louisville, Kentucky: We are a non-profit educational organization, which was founded in 1961, to promote the interests of geology, minerals, fossils, and lapidary arts in Kentucky and Southern Indiana.

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Research and Collections

Researchers (showing 1 of 1 listings)

Dr. Thomas W. Kammer: Specialty: Evolutionary paleoecology of Paleozoic crinoids, plus lithostratigraphy, biostratigraphy, and sequence stratigraphy of marine Mississippian rocks in the east-central United States. Field areas include West Virginia, Kentucky, Indiana, Illinois, Missouri, and Iowa.

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Field Guides (showing 1 of 1 listings)

Cincinnati Fossils: This site lists all fossil taxa described or reported from the type Cincinnatian strata (Upper Ordovician) of Ohio, Kentucky, and Indiana, including mollusks, arthropods, echinoderms, brachiopods, and many other groups.

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