Where: Fergus County, Montana (46.9° N, 109.0° W: paleocoordinates 5.4° N, 35.1° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Bear Gulch Member (Heath Formation), Arnsbergian (326.4 - 318.1 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 116658: authorized by Matthew Clapham, entered by Matthew Clapham on 10.09.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Osteichthyes | |
Cyranorhis bergeraci n. gen.
| |
Chondrichthyes | |
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