File:Cheirocystis fultonensis (fossil rhombiferans) (Fulton Shale, Upper Ordovician; northern Kentucky, USA) (35760100756).jpg

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Cheirocystis fultonensis Sumrall & Schumacher, 2002 - fossil rhombiferans from the Ordovician of Kentucky, USA.

These rare fossils are from the famous Cincinnatian Series of the tristate area of Ohio-Kentucky-Indiana. Rocks in the Cincinnatian were deposited in relatively shallow marine facies during the Late Ordovician. The Cincinnatian succession is mostly interbedded limestones and shales. Most of the limestones are event beds (= tempestites), deposited during ancient storms.

The fossils shown above are rhombiferan cystoids - two heads and a complete specimen. Rhombiferans are an extinct group of sessile, benthic, short-stemmed echinoderms.

Classification: Animalia, Echinodermata, Rhombifera, Glyptocystitida, Cheirocrinidae

Stratigraphy: Fulton Submember, lower Kope Formation, lower Edenian Stage, lower Cincinnatian Series, Upper Ordovician

Locality: unrecorded/undisclosed site in northern Kentucky (but very likely from the Woolcott South Outcrop - roadcut on the eastern side of Rt. 1159, just south of the Rt. 9-Rt. 1159 intersection, southern side of the town of Woolcott, northern Bracken County, northern Kentucky, USA; 38° 43' 52.53" North latitude, 84° 06' 04.77" West longitude)
Date
Source Cheirocystis fultonensis (fossil rhombiferans) (Fulton Shale, Upper Ordovician; northern Kentucky, USA)
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@N05/35760100756 (archive). It was reviewed on 1 March 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

1 March 2018

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current04:38, 1 March 2018Thumbnail for version as of 04:38, 1 March 20182,079 × 2,491 (3.33 MB)Sadads (talk | contribs)Transferred from Flickr via #file_candidates

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