Trumbo's Anthill: Lancian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes
Osteichthyes indet. Huxley 1880
Database 2005 11 elements
Amphibia
? Amphibia indet. Linnaeus 1758
Database 2005 3 specimens
Amphibia - Temnospondyli
Anura indet. (Fischer von Waldheim 1813)
Database 2005 1 specimen
Amphibia - Temnospondyli - Urodela
Habrosaurus dilatus Gilmore 1928
Database 2005 2 specimens
Scapherpeton tectum Cope 1876
Database 2005 5 specimens
Amphibia - Temnospondyli - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961
Database 2005 2 specimens
Reptilia
Reptilia indet. Laurenti 1768
Database 2005 4 specimens
Reptilia - Dinosauria
Dinosauria indet. Owen 1842
Database 2005 1 specimen
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
Database 2005 4 specimens
Reptilia
Thescelosaurus sp. Gilmore 1913
Database 2005 2 specimens
Reptilia - Hadrosauridae
Hadrosauridae indet. Cope 1869
Database 2005 2 specimens
Reptilia - Theropoda
Theropoda indet. Marsh 1881
Database 2005 3 specimens
Reptilia - Dromaeosauridae
cf. Dromaeosaurus sp. Matthew and Brown 1922
Sankey 2008 1 specimen
UCMP 187037
    = Saurornitholestinae indet. Longrich and Currie 2009
Larson and Currie 2013
Richardoestesia sp. Currie et al. 1990
Database 2005 1 specimen
Reptilia
Aves indet. Linnaeus 1758
Database 2005 1 specimen
Reptilia - Caenagnathidae
Chirostenotes sp. Gilmore 1924
Database 2005 1 specimen
Reptilia - Coeluridae
Coeluridae indet. Marsh 1881
Database 2005 2 specimens
Reptilia
Brachychampsa montana Gilmore 1911
Database 2005 2 specimens
Protocaiman sp. Bona et al. 2018
Database 2005 1 specimen
Reptilia - Crocodylidae
Crocodylidae indet. Cuvier 1807
Database 2005 1 specimen
Reptilia
Leidyosuchus sternbergi (Gilmore 1910)
Database 2005 3 specimens
recombined as Borealosuchus sternbergii
Champsosaurus sp. Cope 1876
Database 2005 1 specimen
Champsosaurus natator Parks 1933
Database 2005 2 specimens
Reptilia - Sauria
Sauria indet. MacCartney 1802
Database 2005 3 specimens
Reptilia
Parasaniwa wyomingensis Gilmore 1928
Database 2005 1 specimen
Reptilia - Anguidae
Odaxosaurus piger (Gilmore 1928)
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 3 specimens
Reptilia - Baenidae
cf. Baenidae indet. Cope 1882
Database 2005 1 specimen
Neurankylus eximius Lambe 1902
Database 2005 1 specimen
Mammalia - Multituberculata - Cimolomyidae
Meniscoessus robustus (Marsh 1889)
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma cf. formosa (Marsh 1889)
(1 measurement)
Mammalia - Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889
Mammalia - Pediomyidae
Pediomys florencae Clemens 1966
recombined as Protolambda florencae
Mammalia - Alphadontidae
Alphadon marshi Simpson 1927
    = Alphadon sp. Simpson 1927
Alroy 2002
possibly A. jasoni in light of Johanson 1996b
Actinopteri - Elopiformes
? Elopiformes indet. Sauvage 1875
Database 2005 1 element
Actinopteri - Amiiformes - Amiidae
Amia sp. Linnaeus 1766
Database 2005 1 element
Amia uintaensis (Leidy 1873)
Database 2005 3 elements
nomen dubium belonging to Amiinae
Amia fragosa Jordan 1927
Database 2005 2 elements
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843
Database 2005 1 element
Lepisosteus occidentalis (Leidy 1856)
Database 2005 5 elements
original and current combination Lepidotus occidentalis
Chondrichthyes - Rajiformes
Rajiformes indet. Berg 1940
Database 2005 1 element
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
Database 2005 2 elements
see common names

Geography
Country:United States State/province:Montana County:Garfield
Coordinates: 47.5° North, 107.1° West (view map)
Paleocoordinates:54.4° North, 80.7° 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
Formation:Hell Creek
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Environment:coarse channel fill
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Disassociated major elements:many
Disassociated minor elements:many
Collection methods and comments
Collection methods:bulk,surface (float),anthill,sieve,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:UCMP
Taxonomic list comments:this is the only Lancian Hell Creek area locality high enough in the section to be close to the C29r - C30n transition reported by Archibald et al. 1982 and Swisher et al. 1993 at about 15 m below the Z Coal; transition dated at 65.578 Ma by Cande and Kent 1995
Metadata
Also known as:UCMP V-72213
Database number:14639
Authorizer:J. Alroy, M. Carrano Enterer:J. Alroy, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2002-05-15 00:00:00 Last modified:2009-06-19 17:03:51
Access level:the public Released:2002-05-15 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]
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]
34479ETE J. T. Sankey. 2008. Diversity of latest Cretaceous (late Maastrichtian) small theropods and birds: teeth from the Lance and Hell Creek formations, USA. In J. T. Sankey & S. Baszio (ed.), Vertebrate Microfossil Assemblages: Their Role in Paleoecology and Paleobiogeography. Indiana University Press, Bloomington 117-134 [M. Carrano/M. Carrano]