USGS "blue file" Loc. 13417 (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, calcareous shale

• 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].
• shale, black, fissile, calcareous, poorly exposed.

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 5643: 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
unclassified
  -
Triplophylliltes cf. spinulosus
Rhynchonellata
 Rhynchonellida - Leiorhynchidae
Leiorhynchus carboniferus