Dave's Camp Site: Valanginian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Iguanodontia indet.
(Baur 1891)
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1 individual | |||||||||
| DMNH 47994; "at the iguanodontid-hadrosaurid split" | ||||||||||
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= Cedrorestes crichtoni n. gen., n. sp.
Gilpin et al. 2007
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Gilpin et al. 2007 | |||||||||
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Reptilia
- Theropoda
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Theropoda indet.
Marsh 1881
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Gilpin et al. 2007 | |||||||||
| teeth | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Utah | County: | Emery |
| Coordinates: | 38.9° North, 109.5° West (view map) | ||||
| Paleocoordinates: | 37.2° North, 59.0° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Valanginian | 10 m.y. bin: | Cretaceous 1 |
| Key time interval: | Valanginian | ||
| Age range of interval: | 139.80000 - 132.60000 m.y. ago |
Stratigraphy
| Geological group: | Dakota | Formation: | Cedar Mountain | Member: | Yellow Cat |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: near top of member
The age of the base of the YCM is unknown and estimates range from Berrisian to early Aptian. Britt et al. 2007 suggested a maximum depositional age for the YCM of ~124Ma, but Sames et al. 2010 suggested on the basis of ostracod biostratigraphy the YCM may be as old as Late Berrisian. Hendrix et al. 2015 and Joeckel et al. 2019 supported this with U-Pb dates from detrital zircons, the latter study suggested that the upper YCM is Valanginian. At any rate, the age of the overlying Poison strip member was dated at its base to 119.4Ma, so the YCM is older than this. | |||||
Lithology and environment
| Primary lithology: | green sandy,calcareous mudstone |
| Includes fossils? | Y |
| Lithology description: "light green, sandy mudstone" described as "calcareous-rich" | |
| Environment: | fluvial-lacustrine indet. |
| Geology comments: member is dominated by "overbank and lacustrine mudstones" | |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils,mesofossils |
| Preservation of anatomical detail: | good |
| Associated major elements: | many |
| Disassociated major elements: | some |
| Fragmentation: | occasional |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | DMNH |
Metadata
| Database number: | 73890 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2007-07-11 12:46:00 | Last modified: | 2022-09-21 14:29:57 |
| Access level: | the public | Released: | 2007-07-11 12:46:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 82657. | D. Gilpin, K. Carpenter, and T. DiCroce. 2002. New ornithopod with hadrosaur-like features from the Lower Cretaceous of Utah. Journal of Vertebrate Paleontology 22(3 (suppl.)):58A-59A [M. Carrano/M. Carrano] |
Secondary references:
| 50540 | K. Carpenter and Y. Ishida. 2010. Early and "middle" Cretaceous iguanodonts in time and space. Journal of Iberian Geology 36(2):145-164 [M. Carrano/M. Carrano] | |
| 24824 | ETE | D. Gilpin, T. DiCroce, and K. Carpenter. 2007. A possible new basal hadrosaur from the Lower Cretaceous Cedar Mountain Formation of eastern Utah. In K. Carpenter (ed.), Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs 79-89 [M. Carrano/M. Carrano/M. Carrano] |