3 miles east of Knoxville (Ordovician of the United States)

Where: Tennessee (36.0° N, 83.9° W: paleocoordinates 29.8° S, 69.9° W)

When: Pygodus anserinus conodont zone, Holston Marble Member (Red Knobs Formation), Chazyan (468.1 - 460.9 Ma)

• Holston Marble is lower part of the Red Knobs under the original defintion; however, this is now all Holston.

• formation-level stratigraphic resolution

Environment/lithology: red limestone and ferruginous, calcareous sandstone

• The Red Knobs formation is a thick succession of red to pink calcarenites and limy ferruginous sandstones up to 750 feet in thickness.

Size class: macrofossils

Reposited in the USNM

Primary reference: G. A. Cooper. 1956. Chazyan and related brachiopods. Smithsonian Miscellaneous Collections 127:1-1245 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186186: authorized by Pete Wagner, entered by Pete Wagner on 16.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Orthotetida - Triplesiidae