Both sides of the old road in the cedar glade ¼ mile southeast of Friendsville (Ordovician of the United States)

Where: Tennessee (35.7° N, 84.1° W: paleocoordinates 29.8° S, 70.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Hustedograptus teretiusculus graptolite zone, Arline Formation, Chazyan (470.0 - 457.3 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

• .. the characteristic fossils of the Arline formation occur in cobbly and shaly limestone 225 feet thick...

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 164884: authorized by Pete Wagner, entered by Pete Wagner on 29.12.2014, edited by Björn Kröger

Creative Commons license: CC BY (attribution)

Taxonomic list

Lingulata
 Lingulida - Paterulidae
Paterula perfecta Cooper 1956
 Lingulida - Lingulasmatidae
Lingulasma matutinum n. sp. Cooper 1956
 Acrotretida - Acrotretidae
"? Conotreta alta n. sp." = Talasotreta alta
"? Conotreta alta n. sp." = Talasotreta alta Cooper 1956
 Siphonotretida - Siphonotretidae
Siphonotreta americana n. sp. Cooper 1956
Strophomenata
 Strophomenida - Rafinesquinidae
"Macrocoelia obesa" = Colaptomena obesa
"Macrocoelia obesa" = Colaptomena obesa Cooper 1956
 Strophomenida - Strophomenidae
Rhipidomena "sp. 1" Cooper 1956
About 100 feet below
Opikina glabella Cooper 1956
Öpikina glabella
 Strophomenida - Glyptomenidae
Platymena plana Cooper 1956
 Strophomenida - Furcitellidae
Dactylogonia geniculata2 Ulrich and Cooper 1942
 Strophomenida - Plectambonitidae
Isophragma extensum Cooper 1956
Isophragma subabbreviatum n. sp. Cooper 1956
 Strophomenida - Leptellinidae
Leptellina tennesseensis3 Ulrich and Cooper 1936
Titanambonites amplus Raymond 1928
Palaeostrophomena superba n. sp. Cooper 1956
 Strophomenida - Sowerbyellidae
"Sowerbyella varicostellata n. sp." = Sowerbyella (Sowerbyella) varicostellata
"Sowerbyella varicostellata n. sp." = Sowerbyella (Sowerbyella) varicostellata Cooper 1956
 Strophomenida - Bimuriidae
Bimuria superba1 Ulrich and Cooper 1942
 Billingsellida - Polytoechiidae
Eremotoechia cloudi n. gen. n. sp.
Eremotoechia cloudi n. gen. n. sp. Cooper 1956
Rhynchonellata
 Orthida - Plaesiomyidae
Multicostella plena n. sp. Cooper 1956
 Orthida - Paurorthidae
Paurorthis longa Cooper 1956