RTMP L2000, Horsethief Canyon: Early/Lower Maastrichtian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
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Mammalia indet.
Linnaeus 1758
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4 specimens | |||||||||
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Mammalia
- Pediomyidae
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Pediomys sp.
Marsh 1889
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1 specimen | |||||||||
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= Pediomyidae indet.
Simpson 1927
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Alroy 2007 | |||||||||
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Reptilia
- Tyrannosauridae
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Tyrannosauridae indet.
Osborn 1906
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25 specimens | |||||||||
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Reptilia
- Troodontidae
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Troodon sp.
Leidy 1856
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65 specimens | |||||||||
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= Albertavenator curriei
Evans et al. 2017
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Funston and Currie 2018 | |||||||||
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Reptilia
- Dromaeosauridae
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Richardoestesia sp.
Currie et al. 1990
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11 specimens | |||||||||
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cf. Saurornitholestes sp.
Sues 1978
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8 specimens | |||||||||
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= Dromaeosaurinae indet.
Matthew and Brown 1922
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Larson and Currie 2013 | |||||||||
| TMP 1998.084.0003 | ||||||||||
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Reptilia
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Paronychodon sp.
Cope 1876
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1 specimen | |||||||||
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Reptilia
- Hadrosauridae
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Hadrosauridae indet.
Cope 1869
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224 specimens | |||||||||
| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Alberta |
| Coordinates: | 51.5° North, 112.9° West (view map) | ||
| Paleocoordinates: | 59.2° North, 84.6° West | ||
| Basis of coordinate: | estimated from map | ||
| Altitude: | 2397 feet | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Early/Lower Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Geological group: | Edmonton | Formation: | Horseshoe Canyon |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | sideritic silty,carbonaceous "shale" |
| Secondary lithology: | ironstone |
| Includes fossils? | Y |
| Lithology description: "3.5 m thick, olive-coloured, silty shale that contains a prominent ironstone layer, abundant small siderite nodules and rare sideritized rhizoliths" | |
| Environment: | "channel" |
| Geology comments: meandering channel deposits interpreted as having been deposited in an overbank setting during a flood event; scattered fossils are interpreted to represent a modern deflational lag formed by winnowing away of fine-grained sediments | |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils,mesofossils |
| Spatial orientation: | random |
| Preservation of anatomical detail: | variable |
| Articulated whole bodies: | none |
| Associated major elements: | none |
| Fragmentation: | frequent |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ),sieve,field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 60563 | ||
| Authorizer: | M. Carrano, J. Alroy | Enterer: | K. Maguire, J. Alroy, M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2006-05-17 11:45:59 | Last modified: | 2023-04-07 15:54:57 |
| Access level: | the public | Released: | 2006-05-17 11:45:59 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 17404. | ETE | M. J. Ryan, P. J. Currie, J. D. Gardner, M. K. Vickaryous, and J. M. Lavigne. 2000. Baby hadrosaurid material associated with an unusually high abundance of Troodon teeth from the Horseshoe Canyon Formation, Upper Cretaceous, Alberta, Cananda. Gaia 15:123-133 [M. Carrano/K. Maguire/M. Carrano] |
Secondary references:
| 19636 | J. Alroy. 2007. Synonymies and reidentifications of North American fossil vertebrates and so forth. [J. Alroy/J. Alroy] | |
| 84397 | G. F. Funston and P. J. Currie. 2018. The first record of dinosaur eggshell from the Horseshoe Canyon Formation (Maastrichtian) of Alberta, Canada. Canadian Journal of Earth Sciences 55(4):436-441 [M. Carrano/M. Carrano] | |
| 48570 | D. W. Larson and P. J. Currie. 2013. Multivariate analyses of small theropod dinosaur teeth and implications for paleoecological turnover through time. PLoS ONE 8(1):e54329:1-14 [M. Carrano/M. Carrano/M. Carrano] |