File:Brachiopod fossil in sandstone (Byer Sandstone, Lower Mississippian; west of Toboso, Ohio, USA) 1 (31080913376).jpg
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| Description |
Fossil brachiopod in sandstone from the Mississippian of Ohio, USA. The Byer Sandstone is one of four stratigraphic units in the Mississippian-aged, siliciclastics-dominated Logan Formation of eastern Ohio. Ascending from the base, they are the Berne Conglomerate Member, the Byer Sandstone Member, the Allensville Member, and the Vinton Member. The Byer is dominated by quartzose sandstones. The fossil is a brachiopod, a group of 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). Stratigraphy: Byer Sandstone Member, basal Logan Formation, Waverly Group, Osagean Stage, upper Lower Mississippian Locality: talus along active railroad tracks, west of Toboso, eastern Licking County, eastern Ohio, USA (vicinity of 40° 02’ 56.53” North latitude, 82° 14’ 04.26” West longitude) |
| Date | |
| Source | Brachiopod fossil in sandstone (Byer Sandstone, Lower Mississippian; west of Toboso, 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@N05/31080913376 (archive). It was reviewed on 10 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 | 02:14, 10 October 2019 | | 4,000 × 3,000 (4.34 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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