Dinwoody Canyon, Retort Member, Fremont County: Wuchiapingian, Wyoming
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Eugeneodontiformes
- Helicoprionidae
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? Edestus sp.
Leidy 1855
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= ? Helicoprion sp.
Karpinsky 1899
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Itano et al. 2012 | |||||||||
| "probably belong to some other edestoid, such as Helicoprion" | ||||||||||
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Campodus variabilis
(Newberry and Worthen 1870)
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| recombined as Agassizodus variabilis | ||||||||||
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Chondrichthyes
- Helodontiformes
- Helodontidae
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Helodus subpolitus
Branson 1916
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Chondrichthyes
- Chimaeriformes
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Hamatus phosphoriensis
Branson 1916
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| recombined as Arctacanthus phosphoriensis | ||||||||||
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Dolophonodus uncinatus n. sp.
Branson 1933
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| replaced by Arctacanthus wyomingensis | ||||||||||
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Ancistriodus multisectus
Branson 1933
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| recombined as Arctacanthus multisectus | ||||||||||
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Chondrichthyes
- Ctenacanthiformes
- Ctenacanthidae
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Ctenacanthus browni
Branson 1916
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| recombined as Acondylacanthus browni | ||||||||||
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Cladodus occidentalis
Leidy 1859
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| recombined as Glikmanius occidentalis | ||||||||||
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Bivalvia
- Nuculanida
- Polidevciidae
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Polidevcia bellistriata
(Stevens 1858)
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Ciriacks 1963 | |||||||||
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Bivalvia
- Nuculida
- Nuculidae
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Nuculopsis cf. poposiensis
(Branson 1930)
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Ciriacks 1963 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Wyoming |
| Coordinates: | 43.3° North, 109.4° West (view map) | ||
| Paleocoordinates: | 14.7° North, 31.5° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Permian | Epoch: | Lopingian |
| Stage: | Wuchiapingian | 10 m.y. bin: | Permian 4 |
| Key time interval: | Wuchiapingian | ||
| Age range of interval: | 259.51000 - 254.14000 m.y. ago |
Stratigraphy
| Formation: | Phosphoria | Member: | Franson | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: "Thin phosphate bed at top of Pustula Member" indicates uppermost part of Franson member. Davydov et al. 2017 dated an ash bed in the upper Meade Peak Member at 260.57 ± 0.07 / 0.14 / 0.31 Ma, indicating that the Meade Peak is as young as uppermost Capitanian. | |||||
Lithology and environment
| Primary lithology: | phosphatic lithified "shale" |
| Environment: | offshore |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 90235 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | vertebrate |
| Created: | 2009-07-14 18:13:55 | Last modified: | 2018-11-25 21:28:11 |
| Access level: | the public | Released: | 2009-07-14 18:13:55 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 30292. | C. C. Branson. 1933. Fish fauna of the middle Phosphoria Formation. Journal of Geology 41:174-183 [M. Clapham/M. Clapham] |
Secondary references:
| 27437 | K.W. Ciriacks. 1963. Permian and Eotriassic bivalves of the middle Rockies. Bulletin of the American Museum of Natural History 125(1):1-100 [M. Clapham/M. Clapham] | |
| 42563 | W. M. Itano, K. J. Houck, and M. G. Lockley. 2012. Systematics and occurrences of Edestus (Chondrichthyes) worldwide and new occurrences from Colorado and Texas. Historical Biology 24:397-410 [M. Clapham/M. Clapham] |