Where: Millard County, Utah (38.9° N, 113.5° W: paleocoordinates 7.7° S, 82.0° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Histiodella altifrons zone, Kanosh Formation, Arenig (478.6 - 466.0 Ma)
Environment/lithology: shallow subtidal; shale and limestone
• Kanosh Formation consists of interbedded shales and limestones developed in the upper part of the Pogonip Group.It is approximately 172 m thick. The carbonates of the Kanosh Formation consist mostly of grainstones of various kinds.
• The carbonates of the Kanosh Formation consist mostly of grainstones of various kinds. Intraformational conglomerates (biointrasparites) are the most common grainstones, many with intraclasts several centimeters long. There are also grainstones consisting mostly of echinoderm ossicles, trilobite fragments, ostracodes, bryozoans, molluscs and brachiopods. All aragonitic shells are preserved as molds, some with adhering rinds of micrite. Ooid grainstones are persistent but uncommon in the lower half of the Kanosh.
Size classes: mesofossils, microfossils
Primary reference: A. Ernst, P. D. Taylor, and M. A. Wilson. 2007. Ordovician bryozoans from the Kanosh Formation (Whiterockian) of Utah, USA. Journal of Paleontology 81(5):998-1008 [W. Kiessling/M. Krause]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 143889: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 27.04.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Stenolaemata |
| - Orbiporidae |
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| Trepostomata - Halloporidae |
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| Trepostomata - Aisenvergiidae |
|