On the south side of the road 200 yards southwest of Blockhouse, Blockhouse (Ordovician of the United States)

Where: Tennessee (35.7° N, 83.9° W: paleocoordinates 30.0° S, 70.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Didymograptus murchisoni graptolite zone, Fetzer Member (Arline Formation), Chazyan (468.1 - 460.9 Ma)

• this interval falls within the lower part of the Pygodus anserinus Zone and the upper part of the Pygodus serrus Zone.

•... which occur above the Maclurites beds of the Lenoir and interfinger with black shale of the Rich Valley formation.

• formation-level stratigraphic resolution

Environment/lithology: limestone

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 186616: authorized by Pete Wagner, entered by Pete Wagner on 28.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Strophomenida - Leptellinidae
Leptellina tennesseensis Ulrich and Cooper 1936