Mansfield Bonebed, Kennedy Coulee (RTMP): Middle Campanian, Montana
collected 1992-2002
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Ceratopsidae
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Styracosaurus albertensis
Lambe 1913
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| multiple individuals | ||||||||||
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= Centrosaurinae indet.
Lambe 1915
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Ryan and Russell 2003 | |||||||||
| new taxon | ||||||||||
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= Albertaceratops nesmoi
Ryan 2007
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Ryan 2007 | |||||||||
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Medusaceratops lokii n. gen., n. sp.
Ryan et al. 2010
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Ryan et al. 2010 | 12 specimens | ||||||||
| WDC-DJR-001, 0902; TMP 2002.69.1-10 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | Hill |
| Coordinates: | 48.9° North, 110.6° West (view map) | ||||
| Paleocoordinates: | 56.2° North, 76.2° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Altitude: | 899 meters | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Middle Campanian | ||
| Age range of interval: | 83.60000 - 72.10000 m.y. ago |
Stratigraphy
| Geological group: | Montana | Formation: | Judith River | Member: | McClelland Ferry |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: approx. 77.5 Ma | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -bonebed |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Disassociated major elements: | many |
| Disassociated minor elements: | many |
| Fragmentation: | occasional |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | TMP | Collection dates: | 1992-2002 |
| Collection method comments: some privately collected, other material in Tyrrell Museum and Wyoming Dinosaur Center collections | |
Metadata
| Database number: | 69152 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2007-02-20 08:38:22 | Last modified: | 2016-05-18 14:50:08 |
| Access level: | the public | Released: | 2007-02-20 08:38:22 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 19936. | ETE | F. Sweeney and W. M. Boyden. 1993. A first report of the southern most occurrence of the ceratopian dinosaur, Styracosaurus albertensis, the first found in the United States. Journal of Vertebrate Paleontology 13(3, suppl.):59A [M. Carrano/M. Carrano/J. Alroy] |
Secondary references:
| 59188 | J. C. Mallon, C. J. Ott, P. L. Larson, E. M. Iuliano, and D. C. Evans. 2016. Spiclypeus shipporum gen. et sp. nov., a boldly audacious new chasmosaurine ceratopsid (Dinosauria: Ornithischia) from the Judith River Formation (Upper Cretaceous: Campanian) of Montana, USA. PLoS ONE 11(5):e0154218:1-40 [M. Carrano/M. Carrano] | |
| 19935 | ETE | M. J. Ryan. 2007. A new basal centrosaurine ceratopsid from the Oldman Formation, southeastern Alberta. Journal of Paleontology 81(2):376-396 [M. Carrano/M. Carrano] |
| 23460 | ETE | M. J. Ryan and A. P. Russell. 2003. New centrosaurine ceratopsids from the late Campanian of Alberta and Montana and a review of contemporaneous and regional patterns of centrosaurine evolution. Journal of Vertebrate Paleontology 23(3):91A [M. Carrano/M. Carrano/M. Carrano] |
| 33792 | ETE | M. J. Ryan, A. P. Russell, and S. Hartman. 2010. A new chasmosaurine ceratopsid from the Judith River Formation, Montana. In M. J. Ryan, B. J. Chinnery-Allgeier, D. A. Eberth (eds.), New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Indiana University Press, Bloomington 181-188 [M. Carrano/M. Carrano] |