Where: Meagher County, Montana (46.5° N, 110.4° W: paleocoordinates 4.4° N, 37.5° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Heath Formation, Serpukhovian (330.9 - 323.2 Ma)
• Sections beds labelled Jurassic = first, Mississippian = last. JA: late Chesterian is Serpukhovian according to Mii et al. 1999 (GSA Bull 111:960-973)
• bed-level stratigraphic resolution
Environment/lithology: offshore; poorly lithified, black, calcareous shale
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 5621: authorized by John Alroy, entered by Mike Sommers on 09.11.1999, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
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Strophomenata | |
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Rhynchonellata | |
Punctospirifer transversus McChesney 1860 | |
Spirifer sp. Sowerby 1818 | |
Composita sp. Brown 1849
Cleiothyridina aff. sublamellosa Hall 1858 | |
? Cranaena circularis n. sp.
? Cranaena circularis n. sp. Easton 1962 | |
Chondrichthyes | |
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