MOR locality JR-518, Kennedy Coulee: Middle Campanian - Late Campanian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Hadrosauridae
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Probrachylophosaurus bergei n. gen., n. sp.
Freedman Fowler and Horner 2015
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2 specimens | |||||||||
| MOR 2919, MOR 1097 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana |
| Coordinates: | 49.0° North, 110.5° West (view map) | ||
| Paleocoordinates: | 56.2° North, 76.1° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Middle Campanian - Late Campanian | ||
| Age range of interval: | 83.6 - 72.1 m.y. ago | ||
| Age estimate: | 79.8 ± 0.2 to 79.5 ± 0.2 Ma (unknown) |
Stratigraphy
| Geological group: | Montana | Formation: | Judith River | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: The site, MOR locality JR-518 (“Superduck”), is within a grey mudstone stratigraphically equivalent to Unit 1 of the Oldman Formation of Alberta. The bone horizon is 17.5 m above the top of the Marker A Coal of the Taber Coal Zone of the Foremost Formation, and 7.0 m above the top of the Herronton Sandstone Zone of the Foremost Formation (Fig 4), with a recalibrated age between 79.5 +/- 0.2 Ma and 79.8 +/- 0.2 Ma [10, 11]. | |||||
Lithology and environment
| Primary lithology: | gray lithified mudstone |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Also known as: | Superduck, Probrachylophosaurus-type locality | ||
| Database number: | 194654 | ||
| Authorizer: | G. Lloyd | Enterer: | G. Lloyd |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2018-06-24 15:34:27 | Last modified: | 2022-03-31 04:59:04 |
| Access level: | the public | Released: | 2018-06-24 15:34:27 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 66141. | E. A. Freedman Fowler and J. R. Horner. 2015. A new brachylophosaurin hadrosaur (Dinosauria: Ornithischia) with an intermediate nasal crest from the Campanian Judith River Formation of northcentral Montana. PLoS One 10(11):e0141304 [G. Lloyd/G. Lloyd] |