Raton Basin, sandstone [Smoky Hill Shale, Niobrara Fm]: Middle Santonian, New Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Ammonitida
- Scaphitidae
|
|||||||
|
Clioscaphites vermiformis
(Meek and Hayden 1862)
|
|||||||
|
Cephalopoda
- Ammonitida
- Baculitidae
|
|||||||
|
Baculites codyensis
Reeside 1927
|
|||||||
|
Baculites asper
Morton 1830
|
|||||||
|
Cephalopoda
- Ammonitida
- Diplomoceratidae
|
|||||||
|
Neocrioceras sp.
|
|||||||
|
Cephalopoda
- Ammonitida
- Anisoceratidae
|
|||||||
|
Phlycticrioceras oregonense
Reeside 1927
|
|||||||
| synonym of Phlycticrioceras trinodosus | |||||||
|
Cephalopoda
- Ammonitida
- Collignoniceratidae
|
|||||||
|
Protexanites shoshonensis
|
|||||||
|
Bivalvia
- Myalinida
- Inoceramidae
|
|||||||
|
Inoceramus (Magadiceramus) subquadratus
Schlüter 1887
|
|||||||
| recombined as Magadiceramus subquadratus | |||||||
|
Inoceramus (Cladoceramus) undulatoplicatus
Roemer 1852
|
|||||||
| recombined as Cladoceramus undulatoplicatus | |||||||
|
Inoceramus (Cladoceramus) sp.
Sowerby 1814
|
|||||||
|
Inoceramus (Cordiceramus) cordiformis
(Sowerby 1823)
|
|||||||
| recombined as Cordiceramus cordiformis | |||||||
|
Inoceramus (Volviceramus) grandis
|
|||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | New Mexico |
| Coordinates: | 36.4° North, 104.6° West (view map) | ||
| Paleocoordinates: | 40.6° North, 72.1° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | basin |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Santonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Middle Santonian | Ammonoid zone: | Clioscaphites vermiformis |
| Age range of interval: | 86.30000 - 83.60000 m.y. ago |
Stratigraphy
| Formation: | Niobrara | Member: | Smoky Hill Shale | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Lower Shale of the Smokey Hill Shale, Niobrara Fm, which regionally overlies the Carlisle Shale . AGE: Middle Coniacian-Early Santonian, on the basis of inoceramid and ammonite biostratigraphy. STRATIGRAPHIC POSITION: List representative of the sandstone unit of the Smokey Hill Shale. | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: Lithified, on the basis of facies description and figured specimens. | |
| Environment: | deep subtidal shelf |
| Geology comments: ENVIRONMENT: Offshore marine carbonate environment. | |
Taphonomy
| Modes of preservation: | body,cast,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection,survey of museum collection,observed (not collected) |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | UNSM |
| Collection method comments: COLLECTORS: Scott, Cobban, Merewether, and Buckhorn (1984). REPOSITORY: USNM. | |
| Taxonomic list comments:COVERAGE: Exhaustive for ammonoids, nautiloids, and bivalves. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature, and identifications to species-level. | |
Metadata
| Database number: | 87848 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2009-03-26 12:11:27 | Last modified: | 2019-02-25 23:11:11 |
| Access level: | the public | Released: | 2009-03-26 12:11:27 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 27708. | G. R. Scott, W. A. Cobban, and E. A. Merewether. 1986. Stratigraphy of the Upper Cretaceous Niobrara Formation in the Raton basin, New Mexico. New Mexico Bureau of Mines and Mineral Resources Bulletin 115:1-34 [A. Hendy/A. Hendy] |