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 (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, Lund
Collection methods: mechanical,
• Material is at the University of Montana
Primary reference: K. A. Lowney. 1980. Certain Bear Gulch (Namurian A, Montana) Acinopterygii (Osteichthyes) and a reevaluation of the evolution of the Paleozoic actinopterygians. [E. Dunne/S. Fasey]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 227066: authorized by Emma Dunne, entered by Sophie Fasey on 30.08.2022
Creative Commons license: CC BY (attribution)
Taxonomic list
Coelacanthimorpha | |
| |
Gnathostomata | |
| |
Osteichthyes | |
Yogoniscus gulo Lowney 1980
Fubarichthys prolatus2 Lowney 1980 | |
Actinopteri | |
Apholidotos ossna2 Lund 1991
Paratarrasius hibbardi1 Lund and Melton 1982 |