Western Pit of Hebron Brick Co. (USNM 14053): Wasatchian, North Dakota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Protophyllum semotum n. sp. leaf
Hickey 1977
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5 specimens | |||||||||
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Angiospermae
- Proteales
- Sabiaceae
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Meliosma longifolia leaf
(Hickey 1977)
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181 specimens | |||||||||
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Angiospermae
- Typhales
- Sparganiaceae
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Sparganium stygium seed repro, seed/fruit
Heer 1855
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2 specimens | |||||||||
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Angiospermae
- Fagales
- Juglandaceae
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Platycarya americana seed repro, seed/fruit
Hickey 1977
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1 specimen | |||||||||
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Angiospermae
- Oxalidales
- Oxalidaceae
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Averrhoites affinis leaf
(Newberry 1868)
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2 specimens | |||||||||
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Magnoliopsida
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Dicotylophyllum hamameloides n. sp. leaf
Hickey 1977
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1 specimen | |||||||||
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Dicotylophyllum hebronensis n. sp. leaf
Hickey 1977
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2 specimens | |||||||||
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Lycopodiopsida
- Isoetales
- Isoetaceae
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Isoetites horridus leaf, megaspore
(Dawson 1883)
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2 specimens | |||||||||
| leaf rosettes | ||||||||||
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Polypodiopsida
- Salviniales
- Salviniaceae
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Salvinia preauriculata leaf
Berry 1925
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12 specimens | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | North Dakota | County: | Morton |
| Coordinates: | 48.0° North, 102.1° West (view map) | ||||
| Paleocoordinates: | 51.8° North, 83.4° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
| *Period: | Early/Lower Tertiary - Middle Tertiary | *Local age/stage: | Wasatchian |
| Key time interval: | Wasatchian | ||
| Age range of interval: | 54.9 - 50.5 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Golden Valley | Member: | Camels Butte | ||
| Regional section: | Williston | Regional bed: | Williston | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Lignite is inferred to record an ancient local swamp that extended on either side of the channel. The flora with Eocene indicator plants but also with a high percentage of those found in Paleocene strat was obtained from the interchannel deposits of the Camels Butte member immediately about its lower boundary in one of the western pits of the Hebron Brick Company | |||||
Lithology and environment
| Primary lithology: | yellow claystone |
| Includes fossils? | Y |
| Environment: | "channel" |
Taphonomy
| Modes of preservation: | adpression |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Collection size: | 208 specimens |
| Reason for describing collection: | paleoecologic analysis |
| Museum repositories: | USNM |
Metadata
| Database number: | 10807 | ||
| Authorizer: | H. Sims | Enterer: | S. Ostrowski |
| Modifier: | G. Varnham | Research group: | paleobotany |
| Created: | 2001-06-25 10:08:17 | Last modified: | 2022-03-23 05:37:57 |
| Access level: | the public | Released: | 2001-06-25 10:08:17 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 4023. | ETE 425 | L. J. Hickey. 1977. Stratigraphy and paleobotany of the Golden Valley Formation (Early Tertiary) of western North Dakota. The Geological Society of America Memoir 150:1-183 [H. Sims/S. Ostrowski/J. Cassara] |