Engdahl Anthills 4: Lancian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes
Osteichthyes indet. Huxley 1880
Database 2005 3 elements
? Osteichthyes indet. Huxley 1880
Database 2005 1 element
Amphibia - Temnospondyli - Urodela
Scapherpeton tectum Cope 1876
Database 2005 1 specimen
Reptilia
? Reptilia indet. Laurenti 1768
Database 2005 1 specimen
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
Database 2005 1 specimen
Reptilia - Hadrosauridae
Hadrosaurinae indet. Lambe 1918
Database 2005 1 specimen
Reptilia
Coelurosauria indet. Huene 1914
Database 2005 1 specimen
Reptilia - Dromaeosauridae
Richardoestesia cf. gilmorei Currie et al. 1990
Larson and Currie 2013 1 specimen
UCMP 120287
Reptilia - Caenagnathidae
Chirostenotes sp. Gilmore 1924
Database 2005 1 specimen
Reptilia
Brachychampsa montana Gilmore 1911
Database 2005 1 specimen
Leidyosuchus sternbergi (Gilmore 1910)
Database 2005 1 specimen
recombined as Borealosuchus sternbergii
Reptilia - Sauria
cf. Sauria indet. MacCartney 1802
Database 2005 1 specimen
Reptilia - Testudines
Cryptodira indet. Cope 1868
Database 2005 1 specimen
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
Database 2005 2 specimens
Reptilia - Testudines - Adocidae
Adocus sp. Cope 1868
Database 2005 1 specimen
Reptilia - Testudines - Chelydridae
Chelydridae indet. Swainson 1839
Database 2005 1 specimen
Reptilia - Testudines - Nanhsiungchelyidae
Basilemys sp. Hay 1902
Database 2005 1 specimen
Reptilia
Compsemys victa (Leidy 1856)
Database 2005 1 specimen
Reptilia - Baenidae
Baenidae indet. Cope 1882
Database 2005 1 specimen
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma thompsoni Clemens 1964
Mammalia - Gypsonictopidae
Gypsonictops cf. illuminatus Lillegraven 1969
Mammalia - Pediomyidae
Pediomys elegans Marsh 1889
Mammalia - Alphadontidae
Alphadon marshi Simpson 1927
    = Alphadon sp. Simpson 1927
Alroy 2002
possibly A. jasoni in light of Johanson 1996b
Mammalia - Glasbiidae
Glasbius twitchelli Archibald 1982
Actinopteri - Amiiformes - Amiidae
Amia uintaensis (Leidy 1873)
Database 2005 1 element
nomen dubium belonging to Amiinae
Amia fragosa Jordan 1927
Database 2005 1 element
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
Database 2005 3 elements
original and current combination Lepidotus occidentalis
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
Database 2005 2 elements
Chondrichthyes - Orectolobiformes - Orectolobidae
Squatirhina americana Estes 1964
Database 2005 1 element
recombined as Restesia americana
UMCP 120269, one complete tooth
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lonchidion selachos Estes 1964
Database 2005 1 element
see common names

Geography
Country:United States State/province:Montana County:Garfield
Coordinates: 47.6° North, 107.1° West (view map)
Paleocoordinates:54.4° North, 80.2° West
Basis of coordinate:unpublished field data
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: sandstone
Includes fossils?Y
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Disassociated major elements:some
Disassociated minor elements:some
Collection methods and comments
Collection methods:bulk,surface (float),anthill,sieve,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:UCMP
Metadata
Also known as:UCMP V-73078
Database number:14536
Authorizer:J. Alroy, M. Carrano Enterer:J. Alroy, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2021-09-02 13:15:58
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
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]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
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]