45 km southwest of Jordan (NCD01): Late/Upper Maastrichtian, Montana
collected by J. Hudson

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Pachycephalosaurus wyomingensis (Gilmore 1931)
Goodwin and Evans 2016 3 specimens
ROM 53671, 53672, 53665
Reptilia - Pachycephalosauridae
Sphaerotholus triregnum n. sp. Woodruff et al. 2023
Woodruff et al. 2023
ROM 53583
Reptilia - Dromaeosauridae
Acheroraptor temertyorum n. gen., n. sp. Evans et al. 2013
2 specimens
ROM 63777, an almost complete right maxilla, missing only the posterior portion of the jugal ramus and an associated maxillary tooth complete with root. Referred specimen: ROM 63778, an almost complete left dentary (missing only the teeth and a small posterior portion of the bone) that may pertain to the same individual as ROM 63777
Reptilia - Caenagnathidae
cf. Anzu wyliei Lamanna et al. 2014
Cullen et al. 2020
ROM VP 65884
see common names

Geography
Country:United States State/province:Montana County:Garfield County
Coordinates: 47.1° North, 107.4° West (view map)
Paleocoordinates:53.9° North, 80.7° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
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:Hell Creek
Stratigraphy comments: The holotype was found in strata of the Hell Creek Formation (Upper Maastrichtian, Upper Cretaceous)
Lithology and environment
Primary lithology:coarse,shelly/skeletal,red sandstone
Includes fossils?Y
Lithology description: The specimen was recovered in situ from a reddish-colored, coarse-grained sandstone containing other small vertebrate fossils and invertebrate shell fragments
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:taxonomic analysis
Museum repositories:ROM
Collectors:J. Hudson
Taxonomic list comments:"containing other small vertebrate fossils and invertebrate shell fragments" [not specified]
Metadata
Also known as:Acheroraptor temertyorum type
Database number:152397
Authorizer:R. Benson, P. Mannion, G. Slater, M. Carrano Enterer:R. Benson, P. Mannion, G. Slater, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2013-11-20 03:03:43 Last modified:2016-08-24 14:35:35
Access level:the public Released:2013-11-20 03:03:43
Creative Commons license:CC BY
Reference information

Primary reference:
49049. D. C. Evans, D. W. Larson, and P. J. Currie. 2013. A new dromaeosaurid (Dinosauria: Theropoda) with Asian affinities from the latest Cretaceous of North America. Naturwissenshaften 100:1041-1049 [R. Benson/R. Benson/P. Mannion]

Secondary references:

76231 T. M. Cullen, D. J. Simon, E. K. C. Benner and D. C. Evans. 2020. Morphology and osteohistology of a large‐bodied caenagnathid (Theropoda, Oviraptorosauria) from the Hell Creek Formation (Montana): implications for size‐based classifications and growth reconstruction in theropods. Papers in Palaeontology [P. Mannion/P. Mannion]
60215 M. B. Goodwin and D. C. Evans. 2016. The early expression of squamosal horns and parietal ornamentation confirmed by new end-stage juvenile Pachycephalosaurus fossils from the Upper Cretaceous Hell Creek Formation, Montana. Journal of Vertebrate Paleontology 36(2):e1078343:1-8 [M. Carrano/M. Carrano]
87489 D. C. Woodruff, R. K. Schott, and D. C. Evans. 2023. Two new species of small-bodied pachycephalosaurine (Dinosauria, Marginocephalia) from the uppermost Cretaceous of North America suggest hidden diversity in well-sampled formations. Papers in Palaeontology 9(6):e1535 [G. Slater/G. Slater]