File:Rugose coral (Glen Dean Formation, Upper Mississippian; Rt. 62 roadcut, next to Rt. 3155 intersection, Leitchfield, Kentucky, USA) (40473485160).jpg

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The Glen Dean Formation is an Upper Mississippian shale and limestone unit in Kentucky. Fossils are abundant and include bryozoans (including fenestrates - sheet fragments and Archimedes corkscrews), pelmatozoan stems (many are encrusted with bryozoans), crinoid heads (including the stemless crinoid Agassizocrinus), blastoid heads (Pentremites pyriformis), articulate brachiopods, encrusting inarticulate brachiopods, solitary rugose corals, straight-shelled nautiloid cephalopods, and encrusting spirorbid worm tubes (having tubercles or spine bases).

The fossil shown here is a solitary rugose coral ("horn coral") with encrusters.

Classification: Animalia, Cnidaria, Anthozoa, Rugosa

Stratigraphy: Glen Dean Formation, Chesterian Series, Upper Mississippian

Locality: Leitchfield Outcrop - roadcut along the northern side of Route 62, on the northeastern side of the Route 62-Route 3155 intersection, eastern side of the town of Leitchfield, central Grayson County, west-central Kentucky, USA. (37° 29’ 18.48” North latitude, 86° 15’ 48.73” West longitude)
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Source Rugose coral (Glen Dean Formation, Upper Mississippian; Rt. 62 roadcut, next to Rt. 3155 intersection, Leitchfield, Kentucky, USA)
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@N05/40473485160. It was reviewed on 5 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

5 December 2019

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Date/TimeThumbnailDimensionsUserComment
current03:31, 5 December 2019Thumbnail for version as of 03:31, 5 December 20192,565 × 1,479 (2.64 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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