Brownie Butte: Lancian, Montana
collected 1973-1975

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes
Osteichthyes indet. Huxley 1880
Database 2005 3 specimens
Actinopteri - Aspidorhynchiformes - Aspidorhynchidae
Belonostomus longirostris (Lambe 1902)
Database 2005 1 specimen
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
Database 2005 12 specimens
original and current combination Lepidotus occidentalis
Actinopteri - Amiiformes - Amiidae
Amia fragosa Jordan 1927
Database 2005 9 specimens
Amphibia - Temnospondyli - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961
Database 2005 1 specimen
Amphibia - Temnospondyli - Urodela
Scapherpeton sp. Cope 1876
Database 2005 1 specimen
Mammalia
Mammalia indet. (Linnaeus 1758)
Database 2005 1 specimen
Theria indet. Parker and Haswell 1897
Database 2005 2 specimens
Mammalia - Gypsonictopidae
Gypsonictops hypoconus Simpson 1927
Gypsonictops cf. illuminatus Lillegraven 1969
Archibald 1982
Mammalia - Glasbiidae
Glasbius intricatus Clemens 1966
    = Glasbius twitchelli Archibald 1982
Archibald 1982
replaces ID of Clemens 1973; "Didelphidae undescribed genus and species" of original list
Mammalia - Pediomyidae
Pediomys cooki Clemens 1966
Archibald 1982
recombined as Leptalestes cooki
citing Sloan 1976
Pediomys elegans Marsh 1889
Pediomys hatcheri (Osborn 1898)
original and current combination Protolambda hatcheri
Mammalia - Multituberculata
Multituberculata indet. Cope 1884
Database 2005 4 specimens
Cimexomys minor Sloan and Van Valen 1965
Mammalia - Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma formosa (Marsh 1889)
Mesodma thompsoni Clemens 1964
Mammalia - Multituberculata - Cimolomyidae
Meniscoessus borealis Simpson 1927
1 specimen
synonym of Meniscoessus robustus
Mammalia
Marsupialia indet. Illiger 1811
Database 2005 1 specimen
Reptilia
Reptilia indet. Laurenti 1768
Database 2005 168 specimens
Reptilia - Squamata
Squamata indet. Oppel 1811
Database 2005 1 specimen
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
Database 2005 1 specimen
Reptilia
Compsemys sp. Leidy 1856
Database 2005 1 specimen
Megalosauridae indet. (Fitzinger 1843)
Database 2005 3 specimens
original and current combination Megalosauri
Reptilia - Dromaeosauridae
Richardoestesia cf. gilmorei Currie et al. 1990
Larson and Currie 2013 1 specimen
UCMP 123565
Reptilia
Aves indet. (Linnaeus 1758)
Database 2005 1 specimen
Reptilia - Avisauridae
Avisaurus archibaldi n. gen., n. sp. Brett-Surman and Paul 1985
Brett-Surman and Paul 1985 1 specimen
(1 measurement)
Reptilia - Caenagnathidae
Chirostenotes sp. Gilmore 1924
Database 2005 1 specimen
Reptilia
Ceratopsia indet. (Marsh 1890)
Database 2005 10 specimens
Reptilia - Hadrosauridae
Hadrosauridae indet. Cope 1869
Database 2005 1 specimen
Reptilia
Brachychampsa montana Gilmore 1911
Database 2005 1 specimen
Reptilia - Crocodylidae
Crocodylidae indet. Cuvier 1807
Database 2005 4 specimens
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
Database 2005 1 specimen
UCMP 123549, 1 tooth
    = Myledaphus pustulosus Cook et al. 2014
Cook et al. 2014
see common names

Geography
Country:United States State/province:Montana County:Garfield
Coordinates: 47.6° North, 107.0° West (view map)
Paleocoordinates:54.4° North, 80.1° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
*Epoch:Senonian
Key time interval:Lancian
Age range of interval:72.10000 - 66.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Montana Formation:Hell Creek Member:Upper
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: silty sandstone
Includes fossils?Y
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Disassociated major elements:some
Collection methods and comments
Collection methods:surface (float),field collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:UCMP
Collection dates:1973-1975
Metadata
Also known as:UCMP V-73097
Database number:14515
Authorizer:J. Alroy, M. Carrano Enterer:J. Alroy, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:1994-04-30 00:00:00 Last modified:2021-09-02 11:04:28
Access level:the public Released:1994-04-30 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
3198. R. E. Sloan and L. Van Valen. 1965. Cretaceous mammals from Montana. Science 148(3667):220-227 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
960 J. D. Archibald. 1982. A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana. University of California Publications in Geological Sciences 122:1-286 [J. Alroy/J. Alroy/M. Carrano]
12423ETE M. K. Brett-Surman and G. S. Paul. 1985. A new family of bird-like dinosaurs linking Laurasia and Gondwanaland. Journal of Vertebrate Paleontology 5(2):133-138 [M. Carrano/M. Carrano/M. Carrano]
15570ETE W. A. Clemens. 1989. The valley of Hell Creek, Garfield County, Montana. In J. J. Flynn (ed.), Mesozoic/Cenozoic Vertebrate Paleontology: Classic Localities, Contemporary Approaches; Field Trip Guidebook T322. American Geophysical Union, Washington, DC 60-66 [M. Carrano/K. Maguire/M. Carrano]
77911 T. D. Cook, M. G. Newbrey, D. B. Brinkman and J. I. Kirkland. 2014. Euselachians from the freshwater deposits of the Hell Creek Formation of Montana. In G. P. Wilson, W. A. Clemens, J. R. Horner, J. H. Hartman (eds.), Through the End of the Cretaceous in the Type Locality of the Hell Creek Formation in Montana and Adjacent Areas. Geological Society of America Special Paper 503:229-246 [M. Carrano/M. Carrano]
13103 U.C.M.P. Database. 2005. UCMP collections database. University of California Museum of Paleontology [M. Carrano/M. Carrano/M. Carrano]
48570 D. W. Larson and P. J. Currie. 2013. Multivariate analyses of small theropod dinosaur teeth and implications for paleoecological turnover through time. PLoS ONE 8(1):e54329:1-14 [M. Carrano/M. Carrano/M. Carrano]