Cow Island: Middle Campanian - Late/Upper Campanian, Montana
collected by J. C. Isaac 1876

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Avetheropoda - Tyrannosauridae
Laelaps falculus n. sp. Cope 1876
Cope 1876
synonym of Gorgosaurus libratus
"several teeth"
Reptilia - Hadrosauridae
Diclonius pentagonus Cope 1876
1 individual
mandible with teeth
    = Pteropelyx grallipes n. gen., n. sp. Cope 1889
Cope 1889
nomen dubium belonging to Hadrosauridae
see common names

Country:United States State/province:Montana County:Blaine
Coordinates: 47.8° North, 108.9° West (view map)
Paleocoordinates:54.7° North, 75.1° West
Basis of coordinate:based on nearby landmark
Altitude:699 meters
Geographic resolution:outcrop
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Middle Campanian - Late/Upper Campanian
Age range of interval:83.50000 - 70.60000 m.y. ago
Geological group:Montana Formation:Judith River
Stratigraphic resolution:formation
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Modes of preservation:body
Degree of concentration:dispersed
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:medium
Collection methods and comments
Collection methods:surface (float),field collection
Reason for describing collection:taxonomic analysis
Collectors:J. C. Isaac Collection dates:1876
Database number:58156
Authorizer:M. Carrano Enterer:K. Maguire, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2006-01-25 12:06:44 Last modified:2016-05-18 15:40:17
Access level:the public Released:2006-01-25 12:06:44
Creative Commons license:CC BY
Reference information

Primary reference:

17576.ETE 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]

Secondary references:

15650ETE 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]
15681ETE E. D. Cope. 1889. Notes on the Dinosauria of the Laramie. The American Naturalist 23:9o4-906 [M. Carrano/M. Carrano]
12319ETE R. S. Lull and N. E. Wright. 1942. Hadrosaurian dinosaurs of North America. Geological Society of America Special Paper 40:1-242 [M. Carrano/M. Carrano/M. Carrano]