Natural Fort (UCM Loc. 78193): Lancian, Colorado
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Hadrosauridae
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Hadrosauridae indet.
Cope 1869
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1 specimen | |||||||||
| UCM 42326, tooth | ||||||||||
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Reptilia
- Dromaeosauridae
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Dromaeosaurus sp.
Matthew and Brown 1922
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1 specimen | |||||||||
| UCM 42323, tooth | ||||||||||
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Reptilia
- Baenidae
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Peckemys brinkman
Lyson and Joyce 2009
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Lyson and Joyce 2009 | 1 specimen | ||||||||
| recombined as Cedrobaena brinkman | ||||||||||
| UCM 49318 (partial skull) | ||||||||||
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Reptilia
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Compsemys victa
(Leidy 1856)
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Hutchison and Holroyd 2003 | |||||||||
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Mammalia
- Pediomyidae
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Protolambda hatcheri
Osborn 1898
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Wilson et al. 2010 | |||||||||
| (1 measurement) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Colorado | County: | Weld |
| Coordinates: | 41.0° North, 104.9° West (view map) | ||||
| Paleocoordinates: | 47.6° North, 80.7° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Lancian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Laramie | ||
| Regional section: | Pawnee National Grassland | Regional bed: | 220 m |
| Regional order: | bottom to top | ||
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | sandstone |
| Lithology description: "extensive soft-sediment deformation within a sandy channel fill" | |
| Environment: | "channel" |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ),field collection |
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | UCM |
| Collection method comments: "Microvertebrate fossils have been found in situ and as float at the base of the outcrop; screenwashing has not yet been attempted" | |
Metadata
| Also known as: | Loc. 1 | ||
| Database number: | 96082 | ||
| Authorizer: | J. Alroy, R. Benson, M. Carrano, P. Holroyd | Enterer: | J. Alroy, M. Carrano, P. Holroyd, R. Benson |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2010-05-14 17:11:39 | Last modified: | 2023-01-19 14:21:33 |
| Access level: | the public | Released: | 2010-05-14 17:11:39 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 13266. | ETE | K. Carpenter and D. B. Young. 2002. Late Cretaceous dinosaurs from the Denver Basin, Colorado. Rocky Mountain Geology 37(2):237-254 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 14441 | ETE | P. A. Holroyd and J. H. Hutchison. 2002. Late Cretaceous and Early Paleocene turtle biogeography: new data from the Denver Basin, Colorado. GSA Abstracts with Programs [M. Carrano/M. Carrano/P. Holroyd] |
| 26071 | J. H. Hutchison and P. A. Holroyd. 2003. Late Cretaceous and early Paleocene turtles of the Denver Basin, Colorado. Rocky Mountain Geology 38(1):121-142 [P. Holroyd/P. Holroyd] | |
| 39185 | T. R. Lyson and W. G. Joyce. 2009. A revision of Plesiobaena (Testudines: Baenidae) and an assessment of baenid ecology across the K/T boundary. Journal of Paleontology 83(6):833-853 [R. Benson/R. Benson] | |
| 32620 | G. P. Wilson, M. Dechesne, and I. R. Anderson. 2010. New latest Cretaceous mammals from northeastern Colorado with biochronologic and biogeographic implications. Journal of Vertebrate Paleontology 30(2):499-520 [J. Alroy/J. Alroy] |