Flat Creek 1: Lancian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
Database 2005 1 specimen
Reptilia - Hadrosauridae
Anatosaurus sp. Lull and Wright 1942
Database 2005 1 specimen
synonym of Edmontosaurus
Reptilia - Hypsilophodontidae
Hypsilophodontidae indet. Dollo 1882
Database 2005 1 specimen
Reptilia - Theropoda
cf. Theropoda indet. Marsh 1881
Database 2005 1 specimen
? Theropoda indet. Marsh 1881
Database 2005 1 specimen
Megalosauridae indet. (Fitzinger 1843)
Database 2005 1 specimen
    = Theropoda indet. Marsh 1881
Carrano 2023
Reptilia - Coeluridae
Coeluridae indet. Marsh 1881
Database 2005 1 specimen
Reptilia - Dromaeosauridae
Richardoestesia isosceles Sankey 2001
Database 2005 1 specimen
Saurornitholestinae indet. Longrich and Currie 2009
Larson and Currie 2013 1 specimen
UCMP 120305
Reptilia
Leidyosuchus sternbergi (Gilmore 1910)
Database 2005 1 specimen
recombined as Borealosuchus sternbergii
Brachychampsa montana Gilmore 1911
Database 2005 1 specimen
Reptilia - Sauria
Sauria indet. MacCartney 1802
Database 2005 1 specimen
Reptilia - Testudines
Cryptodira indet. Cope 1868
Database 2005 1 specimen
Mammalia - Alphadontidae
Alphadon marshi Simpson 1927
    = Alphadon sp. Simpson 1927
Alroy 2002
possibly A. jasoni in light of Johanson 1996b
Mammalia - Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889
Mammalia - Multituberculata - Cimolomyidae
Essonodon browni Simpson 1927
Meniscoessus robustus (Marsh 1889)
Amphibia - Temnospondyli - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961
Database 2005 1 specimen
Amphibia - Temnospondyli - Urodela
Scapherpeton tectum Cope 1876
Database 2005 1 specimen
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
Database 2005 2 elements
original and current combination Lepidotus occidentalis
Actinopteri - Amiiformes - Amiidae
Amia fragosa Jordan 1927
Database 2005 2 elements
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
Database 2005 1 element
see common names

Geography
Country:United States State/province:Montana County:Garfield
Coordinates: 47.5° North, 106.4° West (view map)
Paleocoordinates:54.2° North, 79.5° 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Basis of coordinate:unpublished field data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
Formation:Hell Creek
Local section:FlatC Local bed:1
Local order:bottom to top
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: silty 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),sieve,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:UCMP
Taxonomic list comments:lower level of Flat Creek section
Metadata
Also known as:UCMP V-73083
Database number:14546
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:2009-06-19 17:09:00
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]
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]