Eagle Formation VB9617: Early/Lower Campanian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
unclassified
|
||||||||||
|
Retinovena fluvialis n. gen., n. sp. leaf
|
8 specimens | |||||||||
|
Montania glandulosa n. gen., n. sp. leaf
|
10 specimens | |||||||||
|
Ascarinites communis n. gen., n. sp. leaf
|
121 specimens | |||||||||
|
Belfria microphylla n. gen., n. sp. leaf
|
1 specimen | |||||||||
|
Angiospermae
- Laurales
|
||||||||||
|
Laurales informal sp. 2 leaf
Jussieu 1820
|
1 specimen | |||||||||
|
Angiospermae
- Saxifragales
- Cercidiphyllaceae
|
||||||||||
|
Trochodendroides sp. leaf
Berry 1922
|
1 specimen | |||||||||
|
unclassified
|
||||||||||
|
Gymnospermae indet. leaf
|
145 specimens | |||||||||
| replaced by Pinophyta | ||||||||||
| EA 76 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | Carbon |
| Coordinates: | 45.8° North, 108.9° West (view map) | ||||
| Paleocoordinates: | 52.1° North, 76.5° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| *Period: | Late/Upper Cretaceous - Late/Upper Cretaceous | ||
| *International age/stage: | Early/Lower Campanian - Early/Lower Campanian | ||
| Key time interval: | Early/Lower Campanian | ||
| Age range of interval: | 83.60000 - 72.10000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Eagle | Member: | lettered sands | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 15.8 meters below the base of the "Big Bentonite" overlying the Eagle Formation | |||||
Lithology and environment
| Primary lithology: | planar lamination lithified mudstone |
| Includes fossils? | Y |
| Lithology description: orange/tan/maroon mudstone; flat laminations | |
| Environment: | wet floodplain |
Taphonomy
| Modes of preservation: | mold/impression,adpression |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection excludes: | all microfossils,some macrofossils |
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 27371 | ||
| Authorizer: | B. Tiffney | Enterer: | S. Pendleton, B. Tiffney |
| Modifier: | S. Pendleton | Research group: | paleobotany |
| Created: | 2002-12-04 09:52:13 | Last modified: | 2017-05-23 16:34:15 |
| Access level: | database members | Released: | 2002-12-04 09:52:13 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 7503. | M. C. Van Boskirk. 1998. The flora of the Eagle Formation and its significance for Late Cretaceous floristic evolution. Yale University 1-382 [B. Tiffney/S. Pendleton/S. Pendleton] |