ammonites
USGS "blue file" Loc. 14103 (Carboniferous of the United States)

Where: Broadwater County, Montana (45.9° N, 111.5° W: paleocoordinates 5.9° N, 37.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Heath Formation, Serpukhovian (326.4 - 318.1 Ma)

• 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; lithology not reported

• 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].
• none given.

Reposited in the USGS

Collection methods: surface (in situ),

• Collected by Gardner and others (1946) as their locality 44-15-5.

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] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5649: authorized by John Alroy, entered by Mike Sommers on 09.11.1999

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)