Lance Creek, 1.5 miles south of Lightning Creek: Late/Upper Maastrichtian, Wyoming
collected by J. B. Hatcher, T. A. Bostwick, W. H. Utterback, & A. L. Sullins 1891

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Ceratopsidae
Triceratops brevicornus n. sp. Hatcher and Lull 1905
1 individual
synonym of Triceratops horridus
YPM 1834 (= Sk. 22) [now = BSP 1964 I 458]
see common names

Geography
Country:United States State/province:Wyoming County:Niobrara
Coordinates: 43.2° North, 104.6° West (view map)
Paleocoordinates:49.7° North, 79.5° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
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
Formation:Lance
Local section:Lull Lance Creek Local bed:9
Local order:top to bottom
Stratigraphic resolution:bed
Stratigraphy comments: "Laramie" = Lance Fm.; near top of formation
Lithology and environment
Primary lithology:concretionary lithified sandstone
Includes fossils?Y
Lithology description: 'embedded in a hard sandstone concretion"
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body,concretion
Degree of concentration:dispersed
Size of fossils:macrofossils
Preservation of anatomical detail:variable
Associated major elements:all
Fragmentation:frequent
Temporal resolution:snapshot
Collection methods and comments
Collection methods:selective quarrying,surface (in situ),mechanical,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:YPM
Collectors:J. B. Hatcher, T. A. Bostwick, W. H. Utterback, & A. L. Sullins Collection dates:1891
Collection method comments: Collected by J. B. Hatcher, Thomas A. Bostwick, W. H. Utterback, & A. L. Sullins, 1891
Metadata
Also known as:Triceratops brevicornus type, Hatcher Sk. 22
Database number:46132
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-01-04 11:57:35 Last modified:2022-10-18 15:07:22
Access level:the public Released:2005-01-04 11:57:35
Creative Commons license:CC BY
Reference information

Primary reference:
14728.ETE J. B. Hatcher and R. S. Lull. 1905. Two new Ceratopsia from the Laramie of Converse County, Wyoming. The American Journal of Science, series 4 20(120):413-419 [M. Carrano/M. Carrano]

Secondary references:

81845 K. L. Derstler. 1994. Dinosaurs of the Lance Formation in eastern Wyoming. In G. E. Nelson (ed.), Wyoming Geological Association Forty-Fourth Annual Field Conference. Wyoming Geological Association Guidebook 44:127-146 [M. Carrano/M. Carrano]
14103ETE C. A. Forster. 1996. Species resolution in Triceratops: cladistic and morphometric approaches. Journal of Vertebrate Paleontology 16(2):259-270 [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]
13599ETE T. M. Lehman. 1990. The ceratopsian subfamily Chasmosaurinae: sexual dimorphism and systematics. In K. Carpenter and P. J. Currie (eds.), Dinosaur Systematics: Perspectives and Approaches, Cambridge University Press, Cambridge 211-229 [M. Carrano/M. Carrano/M. Carrano]
14177ETE R. S. Lull. 1915. The mammals and horned dinosaurs of the Lance Formation of Niobrara County, Wyoming. The American Journal of Science, series 4 40(238):319-348 [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]
55599 J. H. Ostrom and P. Wellnhofer. 1986. The Munich specimen of Triceratops with a revision of the genus. Zitteliana 14:111-158 [M. Carrano/M. Carrano]