North shore, Bear Gulch (Carboniferous of the United States)

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

• "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 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

Show authors, comments, and common names
Gnathostomata
  -
Actinopterygii "larval actinop"2
Actinopteri
  - Tarrasiidae
Paratarrasius hibbardi1, Apholidotos ossna2
Paratarrasius hibbardi1 Lund and Melton 1982
Apholidotos ossna2 Lund 1991
Osteichthyes
 Fubarichthyiformes - Fubarichthyidae
Yogoniscus gulo, Fubarichthys prolatus2
Yogoniscus gulo Lowney 1980
Fubarichthys prolatus2 Lowney 1980
Coelacanthimorpha
 Coelacanthiformes - Rhabdodermatidae
Caridosuctor populosum2
Caridosuctor populosum2 Lund and Lund 1984 coelacanth
1Lund and Melton 1982; 2Lund and Poplin 1999