YPM 335, Lance Creek: Maastrichtian, Wyoming
collected by J. B. Hatcher 1890

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Pachycephalosauridae
Triceratops sp. Marsh 1889
1 specimen
YPM 335
    = Ceratopsia indet. Marsh 1890
Hatcher et al. 1907
    = Pachycephalosaurus sp. Brown and Schlaikjer 1943
Brown and Schlaikjer 1943
see common names

Country:United States State/province:Wyoming County:Niobrara
Coordinates: 43.2° North, 104.6° West (view map)
Paleocoordinates:49.8° North, 78.9° West
Basis of coordinate:based on nearby landmark
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
Local order:top to bottom
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Modes of preservation:body
Degree of concentration:dispersed
Size of fossils:macrofossils
Preservation of anatomical detail:medium
Disassociated major elements:all
Temporal resolution:snapshot
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Museum repositories:YPM
Collectors:J. B. Hatcher Collection dates:1890
Database number:64645
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2006-09-11 13:17:34 Last modified:2013-09-17 14:37:58
Access level:the public Released:2006-09-11 13:17:34
Creative Commons license:CC BY
Reference information

Primary reference:

14074.ETE O. C. Marsh. 1896. The dinosaurs of North America. United States Geological Survey, 16th Annual Report, 1894-95 55:133-244 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

12773ETE B. Brown and E. M. Schlaikjer. 1943. A study of the troƶdont dinosaurs with the description of a new genus and four new species. Bulletin of the American Museum of Natural History 82(5):115-150 [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]