KJ86149: Puercan, North Dakota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Magnoliopsida
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Dicotylophyllum anomalum leaf
(Ward 1887)
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8 specimens | |||||||||
| FU029 | ||||||||||
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Angiospermae
- Cornales
- Cornaceae
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| 30 specimens | ||||||||||
| (Hollick) McIver & Basinger; FU3 | ||||||||||
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unclassified
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Nyssidium arcticum seed/fruit
Iljinskaja 1974
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6 specimens | |||||||||
| FU059 | ||||||||||
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Angiospermae
- Malpighiales
- Salicaceae
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Populus nebrascensis leaf
Newberry 1868
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67 specimens | |||||||||
| FU007 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | North Dakota | County: | Slope |
| Coordinates: | 46.3° North, 103.9° West (view map) | ||||
| Paleocoordinates: | 55.5° North, 65.1° West (Wright 2013) | ||||
| Basis of coordinate: | stated in text | ||||
| Altitude: | 2920 feet | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Paleocene |
| Stage: | Danian | 10 m.y. bin: | Cenozoic 1 |
| *Period: | Early/Lower Tertiary | *Epoch: | Early/Lower Paleocene |
| *International age/stage: | Early/Lower Danian | *Local age/stage: | Puercan |
| Key time interval: | Puercan | Zone: | FUI |
| Age range of interval: | 66 - 63.8 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Fort Union | Member: | Ludlow | ||
| Local section: | 86148 | ||||
| Regional section: | Marmarth Composite | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 3m to Hell Creek-Fort Union contact datum, 2.25m to K-T boundary based on calculations in Johnson (2002) | |||||
Lithology and environment
| Primary lithology: | concretionary poorly lithified marl | ||
| Includes fossils? | Y | ||
| Environment: | pond | Tectonic setting: | cratonic basin |
Taphonomy
| Modes of preservation: | adpression |
| Size of fossils: | macrofossils |
| Spatial orientation: | random |
| Temporal resolution: | snapshot |
| Spatial resolution: | allochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection |
| Collection size: | 111 specimens |
| Reason for describing collection: | general faunal/floral analysis |
| Collection method comments: Specimens located at Yale Peabody Museum | |
Metadata
| Database number: | 25464 | ||
| Authorizer: | K. Johnson | Enterer: | M. Reynolds |
| Modifier: | M. Reynolds | Research group: | paleobotany |
| Created: | 2002-09-12 13:30:17 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2002-09-12 13:30:17 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 7941. | K. R. Johnson. 2002. Megaflora of the Hell Creek and lower Fort Union Formations in the western Dakotas: Vegetational response to climate change, the Cretaceous-Tertiary boundary event, and rapid marine transgression. The Hell Creek Formation and the Cretaceous-Tertiary boundary in the northern Great Plains: An integrated continental record of the end of the Cretaceous. 361:329-391 [S. Wing/S. Wing/K. Johnson] |
Secondary references:
| 6985 | K. R. Johnson. 2002. Personal field work re: HC and FU formations. [K. Johnson/M. Reynolds/M. Reynolds] |