Engdahl Anthills 3: 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 3 elements
Reptilia
Ankylosauria indet. Osborn 1923
Database 2005 1 specimen
Reptilia - Hadrosauridae
Hadrosaurinae indet. Lambe 1918
Database 2005 1 specimen
Reptilia
Thescelosaurus sp. Gilmore 1913
Database 2005 1 specimen
Reptilia - Hypsilophodontidae
Hypsilophodontidae indet. Dollo 1882
Database 2005 1 specimen
Reptilia - Theropoda
Megalosauridae indet. (Fitzinger 1843)
Database 2005 1 specimen
    = Theropoda indet. Marsh 1881
Carrano 2023
Theropoda indet. Marsh 1881
Database 2005 2 specimens
? Theropoda indet. Marsh 1881
Database 2005 1 specimen
Reptilia
? Coelurosauria indet. Huene 1914
Database 2005 1 specimen
Reptilia - Coeluridae
Coeluridae indet. Marsh 1881
Database 2005 2 specimens
Reptilia - Caenagnathidae
Chirostenotes sp. Gilmore 1924
Database 2005 1 specimen
Reptilia - Dromaeosauridae
Dromaeosauridae indet. Colbert and Russell 1969
Database 2005 1 specimen
cf. Richardoestesia isosceles Sankey 2001
Sankey 2008 6 specimens
Reptilia
Aves indet. Linnaeus 1758
Database 2005 1 specimen
Leidyosuchus sternbergi (Gilmore 1910)
Database 2005 1 specimen
recombined as Borealosuchus sternbergii
Reptilia - Crocodylidae
Crocodylidae indet. Cuvier 1807
Database 2005 1 specimen
Reptilia
Brachychampsa montana Gilmore 1911
Database 2005 1 specimen
Reptilia - Sauria
Sauria indet. MacCartney 1802
Database 2005 1 specimen
? Sauria indet. MacCartney 1802
Database 2005 3 specimens
Reptilia
Compsemys victa (Leidy 1856)
Database 2005 2 specimens
Reptilia - Testudines
Cryptodira indet. Cope 1868
Database 2005 3 specimens
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
Database 2005 1 specimen
Reptilia
Parasaniwa wyomingensis Gilmore 1928
Database 2005 1 specimen
Reptilia - Anguidae
Odaxosaurus piger (Gilmore 1928)
Database 2005 2 specimens
Reptilia
Paraderma bogerti Estes 1964
Database 2005 1 specimen
Reptilia - Xenosauridae
Exostinus lancensis Gilmore 1928
Database 2005 1 specimen
Mammalia - Gypsonictopidae
Gypsonictops cf. illuminatus Lillegraven 1969
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
Mammalia - Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889
Amphibia - Temnospondyli - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961
Database 2005 1 specimen
Amphibia - Temnospondyli - Urodela
Habrosaurus dilatus Gilmore 1928
Database 2005 1 specimen
Scapherpeton tectum Cope 1876
Database 2005 2 specimens
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843
Database 2005 1 element
Lepisosteus occidentalis (Leidy 1856)
Database 2005 3 elements
original and current combination Lepidotus occidentalis
Actinopteri - Amiiformes - Amiidae
Amia fragosa Jordan 1927
Database 2005 2 elements
Amia uintaensis (Leidy 1873)
Database 2005 1 element
nomen dubium belonging to Amiinae
Actinopteri - Aspidorhynchiformes - Aspidorhynchidae
Belonostomus longirostris (Lambe 1902)
Database 2005 1 element
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lonchidion selachos Estes 1964
Database 2005 2 elements
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
Database 2005 190 elements
UCMP 128737, 1 tooth; UCMP 120200, 188 complete and partial teeth; UCMP 120201, 1 denticle
    = 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, 107.1° West (view map)
Paleocoordinates:54.3° 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:70.60000 - 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
Lagerst�tten type:concentrate
Degree of concentration:concentrated
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
Metadata
Also known as:UCMP V-73077
Database number:14535
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 11:01:32
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]
14199ETE M. T. Carrano. 2023. Taxonomic opinions on the Dinosauria. [M. Carrano/M. Carrano/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]
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]