USGS Mesozoic 21636, Five Mile Creek: Early/Lower Callovian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Nautilida - Nautilidae
Eutrephoceras montanensis Kummel 1954
see common names

Geography
Country:United States State/province:Montana County:Carbon
Coordinates: 45.4° North, 108.7° West (view map)
Paleocoordinates:38.9° North, 50.8° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Jurassic Epoch:Middle Jurassic
Stage:Callovian 10 m.y. bin:Jurassic 5
Key time interval:Early/Lower Callovian
Age range of interval:165.30000 - 161.50000 m.y. ago
Stratigraphy
Geological group:Ellis Formation:Rierdon
Stratigraphic resolution:group of beds
Stratigraphy comments: About 25 feet above base of Rierdon formation
Lithology and environment
Primary lithology: lithified not reported
Environment:marine indet.
Taphonomy
Modes of preservation:mold/impression
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Metadata
Database number:180719
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2016-07-29 00:27:35 Last modified:2016-07-29 00:27:35
Access level:the public Released:2016-07-29 00:27:35
Creative Commons license:CC BY
Reference information

Primary reference:
59996. B. Kummel. 1954. Jurassic nautiloids from western North America. Journal of Paleontology 28:320-324 [M. Clapham/M. Clapham/M. Clapham]