Cedarosaurus Quarry (DMNH 39045): Valanginian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Brachiosauridae
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Cedarosaurus weiskopfae n. gen., n. sp.
Tidwell et al. 1999
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1 individual | |||||||||
| DMNH 39045 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Utah | County: | Grand |
| Coordinates: | 38.8° North, 109.6° West (view map) | ||||
| Paleocoordinates: | 37.2° North, 59.1° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
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: Recent work indicates that the upper part of the Yellow Cat Member is Valanginian (Joeckel et al. 2020) | |||||
Lithology and environment
| Primary lithology: | red lithified mudstone |
| Secondary lithology: | "limestone" |
| Includes fossils? | Y |
| Lithology description: "a hard, maroon mudstone layer...Overbank and lacustrine mudstones predominate [in the Yellow Cat Member], although local stringers of lacustrine limestone, lenses of sandstone, and calcareous nodules also occur." | |
| Environment: | crevasse splay |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Spatial orientation: | life position |
| Preservation of anatomical detail: | good |
| Abundance in sediment: | few |
| Associated major elements: | all |
| Size sorting: | poor |
| Fragmentation: | occasional |
| Bioerosion: | occasional |
| Encrustation: | none |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,surface (in situ),mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | DMNH |
Metadata
| Database number: | 48326 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | P. Mannion | Research group: | vertebrate |
| Created: | 2005-03-16 13:35:45 | Last modified: | 2020-03-27 12:56:33 |
| Access level: | the public | Released: | 2005-03-16 13:35:45 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 12918. | ETE | V. Tidwell, K. Carpenter, and W. Brooks. 1999. New sauropod from the Lower Cretaceous of Utah, USA. Oryctos 2:21-37 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 16615 | ETE | F. Sanders, K. Manley, and K. Carpenter. 2001. Gastroliths from the Lower Cretaceous sauropod Cedarosaurus weiskopfae. D. H. Tanke and K. Carpenter (eds.), Mesozoic Vertebrate Life. Indiana University Press, Bloomington 168-180 [M. Carrano/M. Carrano] |
| 50085 | B. A. Swanson, V. L. Santucci, S. K. Madsen, A. S. Elder, and J. P. Kenworthy. 2005. Arches National Park paleontological survey. Geological Resources Division Technical Report NPS/NRGRD/GRDTR-05/01 1-36 [M. Carrano/M. Carrano] | |
| 55126 | O. Wings. 2015. The rarity of gastroliths in sauropod dinosaurs – a case study in the Late Jurassic Morrison Formation, western USA. Fossil Record 18(1):1-16 [M. Carrano/M. Carrano] |