North of Zap (USNM 14099): Wasatchian, North Dakota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Angiospermae - Proteales - Nelumbonaceae
Nelumbo aureavallis leaf Hickey 1977
3 specimens
Polypodiopsida - Salviniales - Salviniaceae
Salvinia preauriculata leaf Berry 1925
4 specimens
see common names

Geography
Country:United States State/province:North Dakota County:Mercer
Coordinates: 47.4° North, 102.0° West (view map)
Paleocoordinates:51.2° North, 83.5° 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 *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
Stratigraphic resolution:bed
Lithology and environment
Primary lithology:yellow claystone
Includes fossils?Y
Lithology description: Bear Den 1.5 m thick
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:7 specimens
Reason for describing collection:paleoecologic analysis
Museum repositories:USNM
Metadata
Database number:10976
Authorizer:H. Sims Enterer:S. Ostrowski
Modifier:H. Sims Research group:paleobotany
Created:2001-07-08 21:59:28 Last modified:2003-07-22 15:02:11
Access level:the public Released:2001-07-08 21:59:28
Creative Commons license:CC BY
Reference information

Primary reference:
4023.ETE 425L. 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]