east side, Cow Creek: Campanian, Montana
collected by J. B. Hatcher 1888

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Avetheropoda - Tyrannosauridae
Ornithomimus grandis n. sp. Marsh 1890
1 individual
nomen dubium belonging to Tyrannosauridae
see common names

Country:United States State/province:Montana County:Fergus
Coordinates: 47.8° North, 108.9° West (view map)
Paleocoordinates:54.6° North, 74.2° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Campanian
Age range of interval:83.60000 - 72.10000 m.y. ago
Geological group:Montana Formation:Eagle Sandstone
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
Associated major elements:all
Temporal resolution:snapshot
Collection methods and comments
Collection methods:surface (float),surface (in situ),field collection,survey of museum collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:J. B. Hatcher Collection dates:1888
Collection method comments: now lost
Database number:52873
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-08-25 08:06:41 Last modified:2015-03-16 15:05:22
Access level:the public Released:2005-08-25 08:06:41
Creative Commons license:CC BY
Reference information

Primary reference:

12250.ETE O. C. Marsh. 1890. Description of new dinosaurian reptiles. The American Journal of Science, series 3 39:81-86 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

10608ETE C. W. Gilmore. 1920. Osteology of the carnivorous Dinosauria in the United States National Museum, with special reference to the genera Antrodemus (Allosaurus) and Ceratosaurus. Bulletin of the United States National Museum 110:1-154 [M. Carrano/M. Carrano/M. Carrano]
14898ETE T. R. Holtz, Jr. 2004. Tyrannosauroidea. In D. B. Weishampel, P. Dodson, and H. Osmolska (eds.), The Dinosauria (second edition). University of California Press, Berkeley 111-136 [M. Carrano/M. Carrano/M. Carrano]
54631 J. R. Horner. 1989. The Mesozoic terrestrial ecosystems of Montana. In D. E. French & R. F. Grabb (ed.), Geologic Resources of Montana. 1989 Montana Geological Society Field Conference and Symposium Guidebook 153-162 [M. Carrano/M. Carrano]