USGS "blue file" Loc. 13366 (Carboniferous of the United States)

Where: Fergus County, Montana (46.9° N, 109.3° W: paleocoordinates 4.1° N, 36.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

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

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, black shale and 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].
• black fissile shale, overlain by numerous thin siltstone and limestone beds in the upper part of heath.

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 5623: authorized by John Alroy, entered by Mike Sommers on 09.11.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Lingulata
 Lingulida - Discinidae
Orbiculoidea interlineata n. sp.
Orbiculoidea interlineata n. sp. Easton 1962
Rhynchonellata
 Rhynchonellida - Leiorhynchidae
Leiorhynchus carboniferus
Strophomenata
 Productida - Productidae
Buxtonia sp.
 Productida - Productellidae
Antiquatonia sp. n. sp.
Antiquatonia sp. n. sp. Miloradovich 1945
Gastropoda
 Murchisoniina - Gosseletinidae
? Angyomphalus excavatus n. sp.
? Angyomphalus excavatus n. sp. Easton 1962 snail
Bivalvia
 Cardiida - Kalenteridae
"? Pleurophorus sp." = Permophorus
"? Pleurophorus sp." = Permophorus Chavan 1954 clam