Where: Fergus County, Montana (47.0° N, 108.9° W: paleocoordinates 5.3° N, 35.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bear Gulch Member (Heath Formation), Arnsbergian (327.0 - 323.7 Ma)

• "Namurian E2b" (E2 = Arnsbergian)

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified, concretionary limestone

Size class: macrofossils

Preservation: adpression, concretion, soft parts

Collected by Melton

Collection methods: mechanical,

• Material is at the University of Montana

Primary reference: R. Lund. 1982. Harpagofututor volsellorhinus new genus and species (Chondrichthyes, Chondrenchelyiformes) from the Namurian Bear Gulch Limestone, Chondrenchelys problematica Traquair (Visean), and their sexual dimorphism. Journal of Paleontology 56(4):938-958 [J. Alroy/J. Alroy/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 116656: authorized by Matthew Clapham, entered by Matthew Clapham on 10.09.2011, edited by Sophie Fasey

Creative Commons license: CC BY (attribution)