MNA Loc. 963, shale facies, upper ss, Dakota: Late Cenomanian, Arizona
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Nuculanida
- Nuculanidae
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Bivalvia
- Ostreida
- Ostreidae
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Bivalvia
- Cardiida
- Corbiculidae
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Bivalvia
- Pholadida
- Corbulidae
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Bivalvia
- Poromyida
- Cuspidariidae
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unclassified
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Bivalvia
- Lucinida
- Lucinidae
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Cephalopoda
- Nautilida
- Nautilidae
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Arizona | County: | Navajo |
| Coordinates: | 36.6° North, 110.5° West (view map) | ||||
| Paleocoordinates: | 43.6° North, 69.0° West (Wright 2013) | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| Key time interval: | Late Cenomanian | ||
| Age range of interval: | 100.5 - 93.9 m.y. ago |
Stratigraphy
| Formation: | Dakota | Member: | upper sandstone | ||
| Local section: | Coal Chute | Local bed: | shale facies | ||
| Local order: | bottom to top | ||||
| Regional section: | Black Mesa | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Stratigraphic details in Kirkland 1990, 1991
Collection comes from the upper Cenomanian Metoicoceras mosbyensis Zone | |||||
Lithology and environment
| Primary lithology: | lithified sandy sandstone | ||
| Secondary lithology: | shelly/skeletal lithified "shale" | ||
| Includes fossils? | Y | ||
| Environment: | basinal (siliceous) | Tectonic setting: | foreland basin |
| Glacial or sequence phase: | transgressive systems tract |
Taphonomy
| Modes of preservation: | mold/impression,recrystallized |
| Size of fossils: | macrofossils,microfossils |
| Preservation of anatomical detail: | good |
| Abundance in sediment: | common |
| Disassociated major elements: | some |
| Temporal resolution: | condensed |
Collection methods and comments
| Collection excludes: | some microfossils |
| Collection methods: | bulk,selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | NMMNH |
Metadata
| Database number: | 53503 | ||
| Authorizer: | P. Harries | Enterer: | P. Harries |
| Modifier: | P. Harries | Research group: | marine invertebrate |
| Created: | 2005-09-10 04:15:58 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2005-09-10 04:15:58 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 14403. | J. I. Kirkland. 1996. Paleontology of the Greenhorn cylcothem (Cretaceous: late Cenomanian to middle Turonian) at Black Mesa, northeastern Arizona. New Mexico Museum of Natural History and Science Bulletin 9:1-131 [P. Harries/P. Harries/P. Harries] |