DEW-22 Ornithomimid: Late/Upper Maastrichtian, South Dakota
collected by W. Stein
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Osteichthyes indet.
(Huxley 1880)
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| "fish" | ||||||||||
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Reptilia
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Theropoda indet.
(Marsh 1881)
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1 specimen | |||||||||
| pedal phalanx | ||||||||||
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Reptilia
- Ornithomimidae
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Ornithomimidae indet.
Marsh 1890
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1 individual | |||||||||
| "associated remains of a small ornithomimid" | ||||||||||
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Reptilia
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Thescelosaurus sp.
Gilmore 1913
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Crocodylia indet.
(Owen 1842)
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Testudinata indet.
(Oppel 1811)
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | South Dakota | County: | Butte |
| Coordinates: | 46.0° North, 103.2° West (view map) | ||||
| Paleocoordinates: | 52.1° North, 76.7° 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: | Late/Upper Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Geological group: | Montana | Formation: | Hell Creek | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: in the "Big Sandy Zone" | |||||
Lithology and environment
| Primary lithology: | pebbly,gray,red sandy conglomerate |
| Includes fossils? | Y |
| Lithology description: "a 1 meter thick, basal lag of well-sorted, light gray to orange, sandy, clay pebble conglomerate that is locally fossiliferous" | |
| Environment: | channel lag |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -bonebed |
| Size of fossils: | macrofossils,mesofossils |
| Associated major elements: | some |
| Disassociated major elements: | some |
| Disassociated minor elements: | some |
| Fragmentation: | occasional |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ),field collection |
| Reason for describing collection: | general faunal/floral analysis |
| Collectors: | W. Stein |
Metadata
| Also known as: | Deer's Ears West | ||
| Database number: | 224491 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2022-03-09 13:22:12 | Last modified: | 2022-03-28 04:50:05 |
| Access level: | the public | Released: | 2022-03-09 13:22:12 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 80625. | W. W. Stein. 2021. The paleontology, geology and taphonomy of the Tooth Draw Deposit; Hell Creek Formation (Maastrictian), Butte County, South Dakota. The Journal of Paleontological Sciences JPS.C.21:0001:1-108 [M. Carrano/M. Carrano/M. Carrano] |