USGS "blue file" Loc. 13369 (Carboniferous of the United States)

Where: Fergus County, Montana (47.1° N, 109.6° W: paleocoordinates 4.4° N, 36.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• 34 ft stratigraphically above USGS 13368. 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, brown 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].
• brown weathering limestone.

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 5626: 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
Buxtonia arizonensis
Rhynchonellata
 Spiriferida - Trigonotretidae
Neospirifer praenuntius n. sp.
Neospirifer praenuntius n. sp. Easton 1962