MV 8313 Bryans Crop (Carboniferous of the United States)

Where: Fergus County, Montana (45.7° N, 112.0° W: paleocoordinates 6.0° N, 37.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

Reposited in the ROM

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 227061: authorized by Emma Dunne, entered by Sophie Fasey on 26.08.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Osteichthyes
 Guildayichthyiformes - Guildayichthyidae
Discoserra pectinodon2
Discoserra pectinodon2 Lund 2000
UMVP 7793
  -
Kalops monophrys3, Kalops diophrys3
Kalops monophrys3 Poplin and Lund 2002
UMVP 8616
Kalops diophrys3 Poplin and Lund 2002
UMVP 8614
Actinopteri
  - Tarrasiidae
Apholidotos ossuosus1
Osteichthyes
 Fubarichthyiformes - Fubarichthyidae
Fubarichthys copiosus, Fubarichthys brevis
Fubarichthys brevis Lowney 1980
1Henderson et al. 2023; 2Lund 2000; 3Poplin and Lund 2002