File:Pudoproetus auriculatus fossil trilobite (Byer Sandstone, Lower Mississippian; Rt. 16 roadcut, 1.45 miles south of Granville, Ohio, USA) 2 (15077886548).jpg

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Pudoproetus auriculatus (centimeter scale) from the Byer Sandstone (Lower Mississippian) of Granville, Ohio, USA (specimen collected 1961 by William D. Nichols; housed at the Orton Geology Museum, Ohio State University, Columbus, Ohio, USA).

Well preserved specimens of the proetide trilobite Pudoproetus auriculatus (also known as Pudoproetus missouriensis) are rare. The specimen shown here is an internal mold of a complete exoskeleton in fossiliferous quartzose sandstone. These fossils have an orangish-brown coating of limonite (FeO·OH·nH2O - hydrous iron hydroxy-oxide). The trilobite is closely associated with isolated crinoid stem columnals.

Stratigraphy: Byer Sandstone Member, lower Logan Formation, lower Osagean Stage, upper Lower Mississippian.

Locality: roadcut on western side of Rt. 16, ~1.45 miles south of Granville, central Licking County, central Ohio, USA.
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Source Pudoproetus auriculatus fossil trilobite (Byer Sandstone, Lower Mississippian; Rt. 16 roadcut, 1.45 miles south of Granville, Ohio, USA) 2
Author James St. John

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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15077886548. It was reviewed on 6 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

6 May 2015

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current18:56, 6 May 2015Thumbnail for version as of 18:56, 6 May 20151,166 × 1,165 (1.73 MB)Natuur12 (talk | contribs)Transferred from Flickr via Flickr2Commons

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