Muddy Creek Plesiosaur Site (Upper Horizon): Cenomanian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Ammonitida
- Baculitidae
|
|||||||
|
Sciponoceras gracile
(Shumard 1860)
|
|||||||
|
Cephalopoda
- Ammonitida
- Acanthoceratidae
|
|||||||
|
Metoicoceras geslinianum
(d'Orbigny 1841)
|
|||||||
|
Gastropoda
- Turritellidae
|
|||||||
|
Turritella whitei
|
|||||||
|
Bivalvia
- Nuculida
|
|||||||
|
Nuculoidea indet.
(Gray 1824)
|
|||||||
| original and current combination Nuculacea | |||||||
|
Bivalvia
- Cardiida
|
|||||||
|
Cardioidea indet.
(Lamarck 1809)
|
|||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Utah | County: | Kane |
| Coordinates: | 37.3° North, 112.7° West (view map) | ||||
| Paleocoordinates: | 39.0° North, 75.4° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| *Period: | Late/Upper Cretaceous | *Epoch: | Gallic |
| *International age/stage: | Middle - Late/Upper Cenomanian | ||
| Key time interval: | Cenomanian | Ammonoid zone: | Sciponoceras gracile |
| Age range of interval: | 100.50000 - 93.90000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Tropic Shale | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "one-meter-thick interval" | |||||
Lithology and environment
| Primary lithology: | concretionary,gray lime mudstone |
| Lithology description: mudstone with 0.3 meter diameter, oval, tan-weathering, medium-gray, frequently hollow septarians | |
| Environment: | marine indet. |
| Geology comments: invertebrates preserved in concretions | |
Taphonomy
| Modes of preservation: | concretion |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 5610 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 1999-10-31 14:35:15 | Last modified: | 2009-05-25 00:11:54 |
| Access level: | the public | Released: | 1999-10-31 14:35:15 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 339. | D. D. Gillette, M. C. Hayden, and A. L. Titus. 1999. Occurrence and biostratigraphic framework of a plesiosaur from the Upper Cretaceous Tropic Shale of southwestern Utah. Utah Geological Survey Miscellaneous Publication 99(1):269-273 [J. Alroy/J. Alroy/M. Uhen] |