USGS "blue file" Loc. 13425 (Carboniferous of the United States)

Where: Golden Valley County, Montana (46.7° N, 109.1° W: paleocoordinates 3.9° N, 36.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Heath Formation, Serpukhovian (330.9 - 323.2 Ma)

• Lower Heath. JA: late Chesterian is Serpukhovian according to Mii et al. 1999 (GSA Bull 111:960-973)

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, black, gray limestone

• Some of the upper Heath MAY be estuarine/non-marine as noted by the author. These localities contain wood and other plant fragments, are non-calcareous and contain no marine fossils. These localities have been omitted by me [MS].
• limestone, dark gray to black, dense, brittle, beds as thick as 2 ft.

Reposited in the USGS

Collection methods: surface (in situ),

Primary reference: W. H. Easton. 1962. Carboniferous formations and faunas of central Montana. United States Geological Survey Professional Paper 348:1-126 [J. Alroy/M. Sommers/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5645: authorized by John Alroy, entered by Mike Sommers on 09.11.1999, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Proetida - Phillipsiidae
Weberides samwaysi Brezinski 2005 trilobite
Lingulata
 Lingulida - Discinidae
Orbiculoidea sp. d'Orbigny 1847
sp. B
Craniata
 Craniida - Craniidae
"Crania cf. modesta" = Petrocrania modesta
"Crania cf. modesta" = Petrocrania modesta White and St. John 1867
Strophomenata
 Strophomenida - Rugosochonetidae
Nix angulata n. gen. n. sp.
Nix angulata n. gen. n. sp. Easton 1962
 Productida - Productellidae
"Productus fasciculatus" = Productus (Diaphragmus) fasciculatus
"Productus fasciculatus" = Productus (Diaphragmus) fasciculatus McChesney 1860
 Productida - Productidae
Dictyoclostus inflatus McChesney 1860
ssp. spinolinearis n. ssp.
Rhynchonellata
 Spiriferinida - Punctospiriferidae
 Athyridida - Athyrididae
 Terebratulida - Cranaenidae
Bivalvia
 Pectinida - Aviculopectinidae
? Aviculopecten sp. M'Coy 1851 scallop