NDSFC Loc. MO20: Late/Upper Maastrichtian, North Dakota
collected by J. Hoganson & J. Erickson 1995
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Chimaeriformes
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Chimaeriformes indet.
Obruchev 1953
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19 specimens | |||||||||
| ND 95-15 (19 fragments) | ||||||||||
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Chondrichthyes
- Chimaeriformes
- Callorhynchidae
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Ischyodus sp.
Egerton 1843
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4 specimens | |||||||||
| ND 95-15.4 to 15.7 | ||||||||||
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Ischyodus rayhaasi
Hoganson and Erickson 2005
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3 specimens | |||||||||
| ND 95-15.1 (R palatine, paratype), ND 95-15.3 (R palatine), ND 95-15.8 (R mandible) | ||||||||||
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Ischyodus cf. rayhaasi
Hoganson and Erickson 2005
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1 specimen | |||||||||
| ND 95-15.2 (R mandible) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | North Dakota | County: | Morton |
| Coordinates: | 46.6° North, 100.6° West (view map) | ||||
| Paleocoordinates: | 52.1° North, 73.7° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
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 | Member: | Breien |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | not reported |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | J. Hoganson & J. Erickson | Collection dates: | 1995 |
Metadata
| Database number: | 179285 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano | Research group: | vertebrate |
| Created: | 2016-06-10 10:30:32 | Last modified: | 2016-06-10 10:30:32 |
| Access level: | the public | Released: | 2016-06-10 10:30:32 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 59359. | J. W. Hoganson and J. M. Erickson. 2005. A new species of Ischyodus (Chondrichthyes: Holocephali: Callorhynchidae) from upper Maastrichtian shallow marine facies of the Fox Hills and Hell Creek formations, Williston Basin, North Dakota, USA. Palaeontology 48(4):709-721 [M. Carrano/M. Carrano] |