Yule, Little Missouri badlands: Late/Upper Maastrichtian, North Dakota
collected by A. G. Leonard 1908

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Ceratopsidae
Triceratops horridus (Marsh 1889)
2 individuals
    = Triceratops sp. Marsh 1889
Lull 1933
see common names

Geography
Country:United States State/province:North Dakota County:Slope
Coordinates: 46.6° North, 103.7° West (view map)
Paleocoordinates:52.7° North, 77.0° West
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Late/Upper Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Geological group:Montana Formation:Hell Creek
Stratigraphic resolution:bed
Stratigraphy comments: 200 ft above local unconformity
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:USNM
Collectors:A. G. Leonard Collection dates:1908
Metadata
Database number:191374
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2018-01-24 16:59:25 Last modified:2018-01-24 17:32:08
Access level:the public Released:2018-01-24 16:59:25
Creative Commons license:CC BY
Reference information

Primary reference:

46330. F. H. Knowlton. 1909. The stratigraphic relations and paleontology of the "Hell Creek beds," Ceratops beds" and equivalents, and their reference to the Fort Union Formation. Proceedings of the Washington Academy of Sciences 11(3):179-238 [M. Carrano/M. Carrano]

Secondary references:

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]
46255 T. W. Stanton. 1909. The age and stratigraphic relationships of the "Ceratops beds" of Wyoming and Montana. Proceedings of the Washington Academy of Sciences 11(3):239-293 [M. Carrano/M. Carrano]