Hell's Hollow Channel: Puercan, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Multituberculata
- Neoplagiaulacidae
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Mesodma garfieldensis
Archibald 1982
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Archibald 1982 | |||||||||
| synonym of Mesodma thompsoni | ||||||||||
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Mammalia
- Multituberculata
- Taeniolabididae
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Catopsalis cf. foliatus
Cope 1882
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Archibald 1982 | |||||||||
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= Catopsalis alexanderi
Middleton 1982
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Middleton 1982 | |||||||||
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Mammalia
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Peradectes pusillus
(Matthew and Granger 1921)
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Archibald 1982 | |||||||||
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= Thylacodon cf. pusillus
Matthew and Granger 1921
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Alroy 2002 | |||||||||
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Mammalia
- Procreodi
- Arctocyonidae
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Oxyprimus erikseni
Van Valen 1978
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Archibald 1982 | |||||||||
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Mimatuta morgoth
Van Valen 1978
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Archibald 1982 | |||||||||
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Ragnarok engdahli n. sp.
Archibald 1982
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Archibald 1982 | |||||||||
| recombined as Baioconodon engdahli | ||||||||||
| (1 measurement) | ||||||||||
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Mammalia
- Cimolestidae
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Procerberus formicarum
Sloan and Van Valen 1965
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Archibald 1982 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | Garfield |
| Coordinates: | 47.6° North, 107.0° West (view map) | ||||
| Paleocoordinates: | 53.9° North, 81.8° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Paleocene |
| Stage: | Danian | 10 m.y. bin: | Cenozoic 1 |
| *Period: | Tertiary | ||
| Key time interval: | Puercan | ||
| Age range of interval: | 66.00000 - 63.80000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Tullock |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | sandstone |
| Includes fossils? | Y |
| Environment: | coarse channel fill |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection methods: | bulk,surface (float),sieve,field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | UCMP |
| Taxonomic list comments:"Hell's Hollow local fauna" of Archibald and Clemens 1984 appears to be a composite list between the IrZ and HFZ coals and seems NOT to include reworked specimens: Swisher et al. 1993; dates on these coals are: IrZ = 65.16 +/- 0.04 Ma HFZ = 64.77 +/- 0.06 Ma average is 64.965 Ma see also Dalrymple et al. 1993, who give a mean of 26 K-T dates of 64.6 +/- 0.1 Ma | |
Metadata
| Also known as: | UCMP V-74110 | ||
| Database number: | 14742 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | M. Uhen | Research group: | vertebrate |
| Created: | 2002-05-15 00:00:00 | Last modified: | 2017-12-01 10:42:56 |
| Access level: | the public | Released: | 2002-05-15 00:00:00 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 959. | J. D. Archibald. 1981. The earliest known Palaeocene mammal fauna and its implications for the Cretaceous–Tertiary transition. Nature 291:650-652 [J. Alroy/J. Alroy/J. Ju] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
| 960 | J. D. Archibald. 1982. A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana. University of California Publications in Geological Sciences 122:1-286 [J. Alroy/J. Alroy/M. Carrano] | |
| 2584 | M. D. Middleton. 1982. A new species and additional material of Catopsalis (Mammalia, Multituberculata) from the Western Interior of North America. Journal of Paleontology 56(5):1197-1206 [J. Alroy/J. Alroy/P. Mannion] |