MV 8313 Bryans Crop: Arnsbergian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Kalops diophrys
Poplin and Lund 2002
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Poplin and Lund 2002 | |||||||||
| UMVP 8614 | ||||||||||
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Kalops monophrys
Poplin and Lund 2002
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Poplin and Lund 2002 | |||||||||
| UMVP 8616 | ||||||||||
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Guildayichthyiformes
- Guildayichthyidae
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Discoserra pectinodon
Lund 2000
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Lund 2000 | |||||||||
| UMVP 7793 | ||||||||||
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Fubarichthyiformes
- Fubarichthyidae
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Fubarichthys copiosus
Lowney 1980
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Fubarichthys brevis
Lowney 1980
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Actinopteri
- Tarrasiidae
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Apholidotos ossuosus
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Henderson et al. 2023 | |||||||||
| UMVP 38641 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | Fergus |
| Coordinates: | 45.7° North, 112.0° West (view map) | ||||
| Paleocoordinates: | 6.0° North, 37.5° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Carboniferous | Epoch: | Mississippian |
| Stage: | Serpukhovian | 10 m.y. bin: | Carboniferous 3 |
| Key time interval: | Arnsbergian | ||
| Age range of interval: | 327.4 - 324 m.y. ago |
Stratigraphy
| Geological group: | Big Snowy | Formation: | Heath | Member: | Bear Gulch |
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: "Namurian E2b" (E2 = Arnsbergian) | |||||
Lithology and environment
| Primary lithology: | planar lamination,concretionary lithified "limestone" |
| Lithology description: "rhythmically alternating sets of microturbidite beds and laminar beds" (Grogan and Lund 1997) | |
| Environment: | open shallow subtidal |
| Geology comments: "shallow, marine tropical bay" (Lund 1985) | |
Taphonomy
| Modes of preservation: | body,adpression,concretion,soft parts |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | ROM |
Metadata
| Database number: | 227061 | ||
| Authorizer: | E. Dunne | Enterer: | S. Fasey | Research group: | vertebrate |
| Created: | 2022-08-26 09:38:18 | Last modified: | 2022-08-26 09:38:18 |
| Access level: | the public | Released: | 2022-08-26 09:38:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 82294. | 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] |
Secondary references:
| 84604 | S. Henderson, E. M. Dunne, S. A. Fasey and S. Giles. 2023. The early diversification of ray-finned fishes (Actinopterygii): hypotheses, challenges and future prospects. Biological Reviews 98:284-315 [P. Wagner/P. Wagner] | |
| 39967 | R. Lund. 2000. The new Actinopterygian order Guildayichthyiformes from the Lower Carboniferous of Montana (USA). Geodiversitas 22(2):171-206 [W. Dahdul/B. Frable ] | |
| 43569 | C. M. Poplin and R. Lund. 2002. Two Carboniferous fine-eyed palaeoniscoids (Pisces, Actinopterygii) from Bear Gulch (USA). Journal of Paleontology 76(6):1014-1028 [S. Peters/S. McMullen/M. Clapham] |