Cook Ranch, Crooked Creek (AMNH): Maastrichtian, Montana
collected by B. Brown & Kaisen 1906

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Hadrosauridae
Claosaurus sp. Marsh 1890
1 individual
(8 measurements)
    = Trachodon mirabilis Leidy 1856
Osborn 1912
    = Anatosaurus sp. Lull and Wright 1942
Lull and Wright 1942
synonym of Edmontosaurus
AMNH 5894
see common names

Geography
Country:United States State/province:Montana
Coordinates: 47.6° North, 106.8° West (view map)
Paleocoordinates:54.4° North, 79.2° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Formation:Hell Creek
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body,soft parts
Size of fossils:macrofossils
Associated major elements:all
Temporal resolution:snapshot
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Museum repositories:AMNH
Collectors:B. Brown & Kaisen Collection dates:1906
Metadata
Database number:57765
Authorizer:M. Carrano Enterer:K. Maguire, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-12-21 13:19:10 Last modified:2016-04-11 17:25:52
Access level:the public Released:2005-12-21 13:19:10
Creative Commons license:CC BY
Reference information

Primary reference:
58850. Anonymous. 1907. Department of Vertebrate Palaeontology; field expeditions of 1906. The American Museum Journal 7(1):6-8 [M. Carrano/M. Carrano]

Secondary references:

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]
12385ETE H. F. Osborn. 1912. Integument of the iguanodont dinosaur Trachodon. Memoirs of the American Museum of Natural History. New Series 1(2):35-544 [M. Carrano/M. Carrano/M. Carrano]