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Bear Gulch (Carnegie Museum Collection) (Carboniferous of the United States)

Where: Fergus County, Montana (47.0° N, 108.9° W: paleocoordinates 5.4° N, 35.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Bear Gulch Member (Heath Formation), Arnsbergian (326.4 - 318.1 Ma)

• "Namurian E2b" (E2 = Arnsbergian)

• member-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, concretionary limestone

• "shallow, marine tropical bay" (Lund 1985)
• "rhythmically alternating sets of microturbidite beds and laminar beds" (Grogan and Lund 1997)

Size class: macrofossils

Preservation: adpression, concretion, soft parts

Collected by J. Lund, W. G. Melton, J. R. Horner, D. Melton, B. Snyder; reposited in the CM

Collection methods: mechanical, peel or thin section,

• material is prepared by taking thin sections

Primary reference: W. G. Melton. 1969. A new dorypterid fish from central Montana. Northwest Science 43:196-206 [M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90681: authorized by John Alroy, entered by John Alroy on 12.08.2009, edited by Loic Villier and Matthew Clapham

Creative Commons license: CC BY (attribution)