mouth of Birch Creek: Middle Campanian, Montana
collected by E. D. Cope 1876

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Ceratopsidae
Monoclonius crassus n. gen., n. sp. Cope 1876
AMNH 3998, 3997 (11 measurements)
see common names

Geography
Country:United States State/province:Montana County:Chouteau
Coordinates: 47.7° North, 109.6° West (view map)
Paleocoordinates:54.8° North, 75.8° West
Basis of coordinate:estimated from map
Altitude:748 meters
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Middle Campanian
Age range of interval:83.50000 - 70.60000 m.y. ago
Stratigraphy
Geological group:Montana Formation:Judith River
Stratigraphic resolution:bed
Stratigraphy comments: near base of JRF
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Lithology description: "sandstone"
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:good
Associated major elements:some
Disassociated major elements:some
Fragmentation:frequent
Temporal resolution:snapshot
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:selective quarrying,surface (in situ),mechanical,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:AMNH
Collectors:E. D. Cope Collection dates:1876
Metadata
Also known as:Dog Creek
Database number:46121
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-01-04 05:48:59 Last modified:2022-12-09 13:52:14
Access level:the public Released:2005-01-04 05:48:59
Creative Commons license:CC BY
Reference information

Primary reference:

15650.ETE E. D. Cope. 1876. Descriptions of some vertebrate remains from the Fort Union Beds of Montana. Proceedings of the Academy of Natural Sciences of Philadelphia 28:248-261 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

17576ETE E. D. Cope. 1877. Report on the geology of the region of the Judith River, Montana, and on vertebrate fossils obtained on or near the Missouri River. Bulletin of the United States Geological and Geographical Survey 3(3):565-597 [M. Carrano/M. Carrano/E. Vlachos]
9274 E. D. Cope. 1889. The horned Dinosauria of the Laramie. The American Naturalist 23(272):715-717 [M. Carrano/M. Carrano/M. Carrano]
12304ETE J. B. Hatcher, O. C. Marsh, and R. S. Lull. 1907. The Ceratopsia. Monographs of the United States Geological Survey 49:1-198 [M. Carrano/M. Carrano/M. Carrano]
12314ETE R. S. Lull. 1933. A revision of the Ceratopsia or horned dinosaurs. Memoirs of the Peabody Museum of Natural History 3(3):1-175 [M. Carrano/M. Carrano/M. Carrano]