Bear Gulch (ROM Collection): Arnsbergian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
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Syllipsimopodi bideni n. gen., n. sp.
Whalen and Landman 2022
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Whalen and Landman 2022 | 1 specimen | ||||||||
| ROMIP 64897 | ||||||||||
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unclassified
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Kalops diophrys n. sp.
Poplin and Lund 2002
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Poplin and Lund 2002 | |||||||||
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Chondrichthyes
- Iniopterygia
- Iniopterygidae
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Rainerichthys zangerli
Grogan and Lund 2009
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2 specimens | |||||||||
| ROM 41128, 43153 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | Fergus |
| Coordinates: | 46.9° North, 109.0° West (view map) | ||||
| Paleocoordinates: | 5.4° North, 35.1° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | local area |
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
| Collection methods: | mechanical |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | ROM |
Metadata
| Database number: | 130890 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | vertebrate |
| Created: | 2012-07-16 02:18:36 | Last modified: | 2024-02-05 00:06:44 |
| Access level: | the public | Released: | 2012-07-16 02:18:36 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 42310. | E. D. Grogan and R. Lund. 2009. Two new iniopterygians (Chondrichthyes) from the Mississippian (Serpukhovian) Bear Gulch Limestone of Montana with evidence of a new form of chondrichthyan neurocranium. Acta Zoologica 90(Suppl. 1):134-151 [M. Clapham/M. Clapham] |
Secondary references:
| 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] | |
| 80601 | C. D. Whalen and N. H. Landman. 2022. Fossil coleoid cephalopod from the Mississippian Bear Gulch Lagerstätte sheds light on early vampyropod evolution. Nature Communications 13(1107) [M. Clapham/M. Clapham] |