USGS "blue file" Loc. 13402 (Carboniferous of the United States)

Where: Fergus County, Montana (46.8° N, 108.9° W: paleocoordinates 3.8° N, 36.6° 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, brown, argillaceous 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, black, weathering brown, fine grained, 1-to6-in. beds, slabby, argillaceous.

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 5638: 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
Strophomenata
 Productida - Productidae
Dictyoclostus inflatus, Dictyoclostus inflatus, Dictyoclostus inflatus
Dictyoclostus inflatus McChesney 1860
Dictyoclostus inflatus McChesney 1860
ssp. spinolinearis n. ssp.
Dictyoclostus inflatus McChesney 1860
ssp. obsoletus n. ssp.
Rhynchonellata
 Spiriferida - Spiriferidae
Spirifer sp.
Spirifer sp. Sowerby 1818
 Athyridida - Athyrididae
Composita sp.
Composita sp. Brown 1849
Lingulata
 Lingulida - Lingulidae
Lingula cf. carbonaria
Lingula cf. carbonaria Shumard and Swallow 1858
Craniata
 Craniida - Craniidae
"Crania cf. modesta" = Petrocrania modesta
"Crania cf. modesta" = Petrocrania modesta White and St. John 1867
Polychaeta
 Sabellida - Serpulidae
Spirorbis sp.
Spirorbis sp. Daudin 1800
Bivalvia
 Pectinida - Aviculopectinidae
? Aviculopecten sp.
? Aviculopecten sp. M'Coy 1851 scallop
Deuteropoda
  -
Ostracoda indet.
Ostracoda indet. Latreille 1802 ostracod