Aniakchak dinosaur tracksite: Late/Upper Campanian - Early/Lower Maastrichtian, Alaska
collected 2002, 2016–2018
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Iguanodontipodidae
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Ornithopoda indet.
(Marsh 1881)
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3 specimens | |||||||||
| footprints; 16FP-04,15; DMNH 2016-05-03, 05-05 | ||||||||||
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= Hadrosauridae indet.
Cope 1869
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Fiorillo and Parrish 2004 | |||||||||
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= Hadrosauropodus sp.
Lockley et al. 2003
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Fiorillo et al. 2019 | |||||||||
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Reptilia
- Tetrapodosauridae
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Tetrapodosaurus sp.
Sternberg 1932
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Fiorillo et al. 2019 | 2 specimens | ||||||||
| 16FP-10; DMNH 2016-05-07 | ||||||||||
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Reptilia
- Grallatoridae
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Grallator sp.
Hitchcock 1858
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Fiorillo et al. 2019 | 1 specimen | ||||||||
| field #17AF7-14-1 | ||||||||||
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Reptilia
- Avipedidae
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Aquatilavipes sp.
Currie 1981
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Fiorillo et al. 2019 | 1 specimen | ||||||||
| DMNH 2018-12-01 | ||||||||||
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Reptilia
- Ornithomimipodidae
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Magnoavipes sp.
Lee 1997
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Fiorillo et al. 2019 | 2 specimens | ||||||||
| field #17AF7-15-2 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Alaska | County: | Lake and Peninsula |
| Coordinates: | 56.8° North, 157.8° West (view map) | ||||
| Paleocoordinates: | 70.4° North, 128.1° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | local area |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Key time interval: | Late/Upper Campanian - Early/Lower Maastrichtian | ||
| Age range of interval: | 83.60000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Chignik | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: found throughout section along coastal outcrops | |||||
Lithology and environment
| Primary lithology: | fine,gray siltstone |
| Secondary lithology: | fine,gray sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: "The tracks are in a light- to medium-gray, fine-grained sandstone...There is a medium gray siltstone layer approximately 1 cm thick between the exposed track and the rest of the boulder. The tracks preserved in the sandstone are interpreted as undertracks, with the actual track preserved in the siltstone interbed. | |
| Environment: | paralic indet. |
| Geology comments: "tidal flat or near shore deposits" | |
Taphonomy
| Modes of preservation: | cast,mold/impression,trace |
| Size of fossils: | macrofossils |
| Spatial orientation: | life position |
| Disassociated major elements: | some |
| Temporal resolution: | snapshot |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ),field collection |
| Reason for describing collection: | paleoecologic analysis |
| Museum repositories: | DMNH | Collection dates: | 2002, 2016–2018 |
Metadata
| Also known as: | ANIA | ||
| Database number: | 44848 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2004-09-17 14:54:32 | Last modified: | 2023-09-08 14:43:02 |
| Access level: | the public | Released: | 2004-09-17 14:54:32 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 82652. | A. R. Fiorillo. 2002. The first record of a Cretaceous dinosaur from western Alaska: implications for understanding the paleoarctic. Journal of Vertebrate Paleontology 22(3 (suppl.)):53A [M. Carrano/M. Carrano] |
Secondary references:
| 11579 | ETE | A. R. Fiorillo and J. T. Parrish. 2004. The first record of a Cretaceous dinosaur from southwestern Alaska. Cretaceous Research 25:453-458 [M. Carrano/M. Carrano/M. Carrano] |
| 70804 | A.R. Fiorillo, Y. Kobayashi, P. J. McCarthy, T. Tanaka, R. S. Tykoski, Y.-N. Lee, R. Takasaki and J. Yoshida. 2019. Dinosaur ichnology and sedimentology of the Chignik Formation (Upper Cretaceous), Aniakchak National Monument, southwestern Alaska; further insights on habitat preferences of high-latitude hadrosaurs. PLoS ONE 14(19):e0223471:1-19 [M. Carrano/M. Carrano] | |
| 35162 | V. L. Santucci, A. P. Hunt, T. Nyborg and J. P. Kenworthy. 2006. Additional fossil vertebrate tracks in National Park Service Areas. In S. G. Lucas, J. A. Spielmann, P. M. Hester, J. P. Kenworthy, & V. L. Santucci (eds.), Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34:152-158 [M. Uhen/M. Shalap/M. Carrano] | |
| 84543 | J. S. Tweet and V. L. Santucci. 2018. An inventory of non-avian dinosaurs from National Park Service areas. In S. G. Lucas & R. M. Sullivan (ed.), Fossil Record 6. New Mexico Museum of Natural History and Science Bulletin 79:703-730 [M. Carrano/M. Carrano] |