KJ9754 CENSUS (DMNH l.2100): Lancian, North Dakota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Coniferales
- Cupressaceae
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Taxodium olrikii leaf
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5 specimens | |||||||||
| HC071 | ||||||||||
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Angiospermae
- Proteales
- Platanaceae
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Platanus raynoldsii leaf
(Newberry 1868)
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56 specimens | |||||||||
| FU016 | ||||||||||
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Angiospermae
- Ranunculales
- Menispermaceae
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Cocculus flabella leaf
Wolfe 1966
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21 specimens | |||||||||
| FU043 | ||||||||||
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Angiospermae
- Saxifragales
- Cercidiphyllaceae
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Cercidiphyllum genetrix leaf
(Newberry 1868)
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3 specimens | |||||||||
| Hickey; FU005 | ||||||||||
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Angiospermae
- Malpighiales
- Salicaceae
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Populus nebrascensis leaf
Newberry 1868
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1 specimen | |||||||||
| FU007 | ||||||||||
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Angiospermae
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| 26 specimens | ||||||||||
| FU081 | ||||||||||
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unclassified
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Cupressinocladus interruptus leaf
Schweitzer 1974
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6 specimens | |||||||||
| FU026 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | North Dakota | County: | Slope |
| Coordinates: | 46.5° North, 104.0° West (view map) | ||||
| Paleocoordinates: | 56.5° North, 62.8° West (Wright 2013) | ||||
| Basis of coordinate: | stated in text | ||||
| Altitude: | 2740 feet | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| *Period: | Early/Lower Cretaceous | *Epoch: | Late/Upper Senonian |
| *International age/stage: | Late/Upper Maastrichtian | *Local age/stage: | Lancian |
| Key time interval: | Lancian | Zone: | FU0 |
| Age range of interval: | 72.2 - 66 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Fort Union | Member: | Ludlow | ||
| Local section: | 9754 | ||||
| Regional section: | Marmarth Composite | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 0.33m to Hell Creek-Fort union contact datum, -1.66m to K-T boundary based on calculations in Johnson (2002) | |||||
Lithology and environment
| Primary lithology: | poorly lithified carbonaceous "shale" | ||
| Includes fossils? | Y | ||
| Environment: | mire/swamp | Tectonic setting: | cratonic basin |
Taphonomy
| Modes of preservation: | adpression |
| Size of fossils: | macrofossils |
| Spatial orientation: | random |
| Temporal resolution: | snapshot |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Collection methods: | bulk,mechanical,field collection |
| Collection size: | 118 specimens |
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | DMNH |
| Collection method comments: Specimens located at Denver Museum of Nature & Science | |
Metadata
| Also known as: | Facet Butte; KJ9846, KJ0149 | ||
| Database number: | 25477 | ||
| Authorizer: | K. Johnson | Enterer: | M. Reynolds |
| Modifier: | M. Reynolds | Research group: | paleobotany |
| Created: | 2002-09-12 14:47:42 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2002-09-12 14:47:42 |
| 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] |