Harbicht Hill Locality: Maastrichtian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Rajiformes
- Sclerorhynchidae
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Ischyrhiza avonicola
Estes 1964
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Estes et al. 1969 | 1 specimen | |||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Montana | County: | McCone County |
| Coordinates: | 47.8° North, 106.2° West (view map) | ||||
| Paleocoordinates: | 54.6° North, 78.5° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | local area |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| *Period: | Late/Upper Cretaceous - Late/Upper Cretaceous | ||
| Key time interval: | Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Hell Creek | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: 40 feet below the Tullock Formation. The stratigraphic level is said to be 'about the same as Bug Creek Anthills' | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | "floodplain" |
| Geology comments: Environment given as "floodplain-riparian" at the level of the Formation. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
| Preservation of anatomical detail: | medium |
| Disassociated minor elements: | some |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 13184 | ||
| Authorizer: | E. Fara | Enterer: | E. Fara |
| Modifier: | P. Mannion | Research group: | vertebrate |
| Created: | 2002-01-25 06:11:41 | Last modified: | 2020-09-01 08:23:48 |
| Access level: | the public | Released: | 2002-01-25 06:11:41 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 3198. | R. E. Sloan and L. Van Valen. 1965. Cretaceous mammals from Montana. Science 148(3667):220-227 [J. Alroy/J. Alroy/J. Alroy] |
Secondary references:
| 4381 | 5% 40240 | R. Estes, P. Berberian, and C. A. M. Meszoely. 1969. Lower vertebrates from the Late Cretaceous Hell Creek Formation, McCone County, Montana. Breviora 337:1-33 [E. Fara/E. Fara/M. Carrano] |