File:Favositid coral in limestone (Columbus Limestone, Middle Devonian; Kelleys Island, Lake Erie, Ohio, USA) 1 (48541264351).jpg
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| Description |
Favositid coral in limestone in the Devonian of Ohio, USA. The Columbus Limestone is a significant carbonate unit in the Middle Devonian of central and northern Ohio. It's actually part of a much more widespread sheet of Devonian carbonates that extends from New York State to the Midwest. The Columbus Limestone represents deposition in a subtropical, shallow-water, carbonate platform environment. The rocks are principally micritic limestones, fossiliferous wackestones, and fossiliferous packstones. Some chert nodules are present in the unit. Fossils are typical Paleozoic shallow marine invertebrates - favositid corals, rugose corals, stromatoporoids brachiopods, crinoids, blastoids, bryozoans, trilobites, bivalves, gastropods, cephalopods, rostroconchs, and tentaculites. Microfossils include conodonts and charophyte oogonia. Other fossils in the Columbus Limestone include vertebrates (fish), land plants (rare), and trace fossils. Some fossil horizons in the Columbus Limestone are partially silicified. Seen here is a fossil colonial coral in fossiliferous limestone matrix from a Columbus Limestone exposure on Kelleys Island in Lake Erie, Ohio. The coral is a favositid, also known as a "honeycomb coral". Favositids are an extinct group of tabulate corals that were common in ancient shallow seas during the Middle Paleozoic. Classification: Animalia, Cnidaria, Anthozoa, Tabulata, Favositidae Stratigraphy: Columbus Limestone, Eifelian Stage, lower Middle Devonian Locality: Glacial Grooves State Park, northwestern Kelleys Island, western Lake Erie, Ohio, USA |
| Date | |
| Source | Favositid coral in limestone (Columbus Limestone, Middle Devonian; Kelleys Island, Lake Erie, Ohio, USA) 1 |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/48541264351 (archive). It was reviewed on 8 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 02:29, 8 October 2019 | | 3,008 × 2,000 (4.91 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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