File:Productid brachiopod (Fort Payne Formation, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 8 (41378633555).jpg
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Summary[edit]
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| Description |
Brachiopods are sessile, benthic, filter-feeding, marine invertebrates. They first appear in Cambrian rocks and were abundant in Earth's oceans throughout the Paleozoic. They were also common in Mesozoic oceans, but are scarce in modern oceanic biotas. Brachiopods have two shells, called valves, that are usually calcareous (made of calcite - CaCO3 - calcium carbonate). Each shell of a brachiopod is bilaterally symmetrical, unlike each shell of a bivalve (clam). The productid brachiopod shown above (= view of ventral valve) is in an outcrop of Fort Payne Formation, a fossiliferous shale-and-limestone unit in the Lower Mississippian of Kentucky and Tennessee. Classification: Animalia, Brachiopoda, Articulata (also known as Rhynchonelliformea), Strophomenida, Productidae Stratigraphy: Fort Payne Formation, Osagean Stage, upper Lower Mississippian Locality: roadcut on the southern side of Route 90, just west of Burkesville, Kentucky, USA (36° 47’ 58.30” North latitude, 85° 22’ 58.20” West longitude) |
| Date | |
| Source | Productid brachiopod (Fort Payne Formation, Lower Mississippian; Burkesville West Rt. 90 roadcut, Kentucky, USA) 8 |
| Author | James St. John |
Licensing[edit]
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/41378633555 (archive). It was reviewed on 12 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 | |
|---|---|---|---|---|---|
| current | 04:04, 12 October 2019 | | 4,000 × 3,000 (5.63 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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