File:Oncolites in fossiliferous limestone (Whitewater Formation, Upper Ordovician; Richmond South Rt. 27 roadcut, Indiana, USA) 9.jpg

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English: Solenopora richmondensis (Miller, 1882) - fossil red algae oncolites from the Ordovician of Indiana, USA. (4.9 cm tall)

This is fossiliferous limestone with common, irregularly-shaped oncolites ("algal balls"). Two forms have been identified in this material - Solenopora richmondensis and Girvanella sp. Solenopora is a fossil rhodophyte (red alga). Girvanella has been interpreted as cyanobacteria (blue-green bacteria).

Stratigraphy: Whitewater Formation, upper Richmondian Stage, upper Cincinnatian Series, upper Upper Ordovician

Locality: Richmond South outcrop - roadcut along the eastern side of Rt. 27, ~1.15 miles southwest of the Rt. 27-Rt. 227 intersection, south of the town of Richmond, southeastern Wayne County, eastern Indiana, USA (39° 47' 17.36" North, 84° 54' 02.39" West)
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Source https://www.flickr.com/photos/47445767@N05/24903564430/
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/24903564430. It was reviewed on 27 October 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

27 October 2020

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current14:00, 27 October 2020Thumbnail for version as of 14:00, 27 October 20205,753 × 4,892 (5.39 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/24903564430/ with UploadWizard

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