OMNH V867: Early/Lower Cenomanian, Utah
collected by Cifelli
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Coniophis sp.
Marsh 1892
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1 specimen | |||||||||
| nomen dubium belonging to Serpentes | ||||||||||
| OMNH 33251 (dorsal vertebra) | ||||||||||
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Reptilia
- Elongatoolithidae
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Macroelongatoolithus carlylei
(Jensen 1970)
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Zelenitsky et al. 2000 | |||||||||
| TMP 98.107.10 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Utah | County: | Emery County |
| Coordinates: | 38.7° North, 111.3° West (view map) | ||||
| Paleocoordinates: | 40.0° North, 73.4° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| Key time interval: | Early/Lower Cenomanian | ||
| Age range of interval: | 100.50000 - 93.90000 m.y. ago |
Stratigraphy
| Geological group: | Dakota | Formation: | Cedar Mountain | Member: | Mussentuchit |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Upper 15 m of an unnamed member of the Cedar Mountain Formation, an ash layer in the overlying sites is dated as latest Albian/earliest Cenomanian
A radiometric age of 98.37 ± 0.07 Ma was obtained by the OMNH from volcanic ash within the Mussentuchit Member (Cifelli and others, 1997, 1999). Additional ages by Garrison and others (2007) ranging from 96.7 ± 0.5 to 98.2 ±0.6 Ma indicate that the Mussentuchit Member was deposited over an interval of 1.5 Ma during the early Cenomanian and supports a correlation with the siliceous marine Mowry Shale to the north, which is well-constrained from 40Ar/39Ar sanidine ages obtained from bentonite beds that bracket the Mowry in Wyoming; the basal Arrow Creek Bentonite is 98.5 ± 0.5 Ma and the capping Clay Spur Bentonite is 97.2 ± 0.7 Ma (Obradovich, 1993; Ogg and Hinnov, 2012; Sprinkel and others, 2012) near the base of the Upper Cretaceous. Tucker et al. 2020 also suggested a likely depositional age of ~96-94Ma for the Musseuntuchit member. | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Collectors: | Cifelli |
| Collection method comments: OMNH (Sam Noble Oklahoma Museum of Natural History) locality V867 | |
Metadata
| Database number: | 117467 | ||
| Authorizer: | R. Benson, M. Carrano | Enterer: | R. Benson, M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2011-09-21 20:08:54 | Last modified: | 2023-08-21 15:53:52 |
| Access level: | the public | Released: | 2011-09-21 20:08:54 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 37785. | J. D. Gardner and R. L. Cifelli. 1999. A primitive snake from the Cretaceous of Utah. In D. M. Unwin (ed.), Cretaceous Fossil Vertebrates. Special Papers in Palaeontology 60:87-100 [R. Benson/R. Benson/M. Carrano] |
Secondary references:
| 1227 | R. L. Cifelli, R. L. Nydam, J. D. Gardner, A. Weil, J. G. Eaton, J. I. Kirkland, and S. K. Madsen. 1999. Medial Cretaceous vertebrates from the Cedar Mountain Formation, Emery County, Utah: the Mussentuchit local fauna. In D. D. Gillette (ed.), Vertebrate Paleontology in Utah. Utah Geological Survey Miscellaneous Publication 99-1:219-242 [J. Alroy/J. Alroy/M. Carrano] | |
| 70245 | D. K. Zelenitsky, K. Carpenter, and P. J. Currie. 2000. First record of elongatoolithid theropod eggshell from North America: the Asian oogenus Macroelongatoolithus from the lower Cretaceous of Utah. Journal of Vertebrate Paleontology 20(1):130-138 [M. Carrano/M. Carrano] |