MDM Quarry 4, Mt. Nebo pit: Early/Lower Campanian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Testudines
|
|||||||
|
Toxochelys latiremis
Cope 1873
|
|||||||
| see common names | |||||||
Geography
| Country: | Canada | State/province: | Manitoba |
| Coordinates: | 49.3° North, 98.3° West (view map) | ||
| Paleocoordinates: | 53.6° North, 63.2° West | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| *Period: | Late/Upper Cretaceous | *Epoch: | Middle Senonian |
| *International age/stage: | Early/Lower Campanian | *Local age/stage: | Pierre |
| Key time interval: | Early/Lower Campanian | ||
| Age range of interval: | 83.60000 - 72.10000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | Montana | Formation: | Pierre Shale | Member: | Pembina |
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: correlated with Sharon Springs Member in South Dakota and Wyoming by Gill and Cobban (1965) and McNeil and Caldwell (1981) | |||||
Lithology and environment
| Primary lithology: | black carbonaceous "shale" |
| Lithology description: The lower unit of the Pembina Formation, from which the fossils were collected, is a distinctive series of black, carbonaceous shales interbedded with seams of bentonite. | |
| Environment: | basinal (siliciclastic) |
| Geology comments: Pembina was deposited in quiet water well below wave base, probably well removed from contemporary shores, but gypsum damage obscures evidence. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Disassociated minor elements: | some |
Collection methods and comments
| Collection excludes: | some genera |
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 23321 | ||
| Authorizer: | J. Alroy | Enterer: | J. Wertheim |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2002-07-11 17:04:03 | Last modified: | 2012-01-31 16:59:58 |
| Access level: | the public | Released: | 2002-07-11 17:04:03 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 735. | 5% 19560 | E. L. Nicholls, T. T. Tokaryk, and L. V. Hills. 1990. Cretaceous marine turtles from the Western Interior Seaway of Canada. Canadian Journal of Earth Sciences 27(10):1288-1298 [J. Alroy/M. Sommers/J. Alroy] |