Blackbird Ridge Quarry (BBR): Middle Campanian - Late Campanian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Gypsonictopidae
Gypsonictops sp. Simpson 1927
Mammalia - Pediomyidae
Pediomys sp. Marsh 1889
omitted for unknown reasons by Fiorillo 1997
    = Pediomyidae indet. Simpson 1927
Alroy 2007
Mammalia - Multituberculata - Cimolomyidae
Meniscoessus sp. Cope 1882
Cimolomys sp. Marsh 1889
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma sp. Jepsen 1940
Fiorillo 1997
Reptilia - Necrosauridae
Labrodioctes montanensis n. gen., n. sp. Gao and Fox 1996
Gao and Fox 1996 1 specimen
ANSP 18664 (holotype dentary)
Reptilia
Theropoda informal indet. A
Fiorillo and Currie 1994 2 specimens
Reptilia - Troodontidae
Troodon sp. Leidy 1856
Fiorillo 1997
Reptilia - Dromaeosauridae
Richardoestesia gilmorei Currie et al. 1990
Fiorillo and Currie 1994 4 specimens
Dromaeosaurus albertensis Matthew and Brown 1922
Fiorillo and Currie 1994 3 specimens
Saurornitholestes langstoni Sues 1978
Fiorillo and Currie 1994 9 specimens
Reptilia - Testudines - Trionychidae
Aspideretes sp. Hay 1904
Fiorillo 1997
Reptilia - Baenidae
Boremys sp. Lambe 1906
Fiorillo 1997
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus sp. Cope 1876
Fiorillo 1997
Chondrichthyes - Orectolobiformes - Orectolobidae
Squatiscyllium sp. Cappetta 1980
Fiorillo 1997
Chondrichthyes - Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1834
Fiorillo 1997
see common names

Geography
Country:United States State/province:Montana County:Golden Valley
Coordinates: 46.4° North, 109.3° West (view map)
Paleocoordinates:53.5° North, 76.2° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Campanian 10 m.y. bin: Cretaceous 7
*Epoch:Senonian
Key time interval: Middle Campanian - Late Campanian
Age range of interval: 83.6 - 72.1 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Montana Formation:Judith River
Local section:JRWGV Local bed:3
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Judithian based on fauna
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:general faunal/floral analysis
Taxonomic list comments:"Alphadon sp." omitted for unknown reasons by Fiorillo 1997
Metadata
Database number:14434
Authorizer:J. Alroy, R. Benson, M. Carrano Enterer:J. Alroy, R. Benson, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:1994-04-30 00:00:00 Last modified:2021-09-10 12:39:29
Access level:the public Released:1994-04-30 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
1098. R. W. Blob. 1992. B. A. thesis [J. Alroy/J. Alroy/M. Uhen]

Secondary references:

19636 J. Alroy. 2007. Synonymies and reidentifications of North American fossil vertebrates and so forth. [J. Alroy/J. Alroy]
1488 A. R. Fiorillo. 1997. Stratigraphic distribution of fossil vertebrates in the Judith River Formation (Upper Cretaceous) of Wheatland and Golden Valley counties, south-central Montana. Northwest Geology 27:1-12 [J. Alroy/J. Alroy/M. Carrano]
13752ETE A. R. Fiorillo and P. J. Currie. 1994. Theropod teeth from the Judith River Formation (Upper Cretaceous) of south-central Montana. Journal of Vertebrate Paleontology 14(1):74-80 [M. Carrano/M. Carrano/M. Carrano]
37933 K. -Q. Gao and R. C. Fox. 1996. Taxonomy and evolution of Late Cretaceous lizards (Reptilia: Squamata) from western Canada. Bulletin of the Carnegie Museum of natural History 33:1-107 [R. Benson/R. Benson]