Wild Horse Basin: Lancian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes
Osteichthyes indet. Huxley 1880
Database 2005 3 elements
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843
Database 2005 4 elements
Actinopteri - Amiiformes - Amiidae
Amia sp. Linnaeus 1766
Database 2005 4 elements
Amphibia
Amphibia indet. Linnaeus 1758
Database 2005 1 specimen
Amphibia - Temnospondyli - Urodela
Urodela indet. (Duméril 1805)
Database 2005 4 specimens
Scapherpetontidae indet. (Auffenberg and Goin 1959)
Database 2005 1 specimen
Scapherpeton tectum Cope 1876
Database 2005 2 specimens
Mammalia - Stagodontidae
Didelphodon vorax Marsh 1889
Mammalia - Pediomyidae
Pediomys florencae Clemens 1966
recombined as Protolambda florencae
Mammalia - Multituberculata - Cimolomyidae
Meniscoessus robustus (Marsh 1889)
Cimolomys gracilis Marsh 1889
Reptilia
Reptilia indet. Laurenti 1768
Database 2005 2 specimens
Reptilia - Testudines - Adocidae
Adocus sp. Cope 1868
Database 2005 2 specimens
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
Database 2005 3 specimens
Reptilia - Testudines - Chelydridae
Chelydridae indet. Swainson 1839
Database 2005 5 specimens
? Chelydridae indet. Swainson 1839
Database 2005 1 specimen
Reptilia - Testudines
Plastomeninae indet. (Hay 1902)
Database 2005 2 specimens
spelled with current rank as Plastomenidae
Plastomenus sp. Cope 1873
Database 2005 1 specimen
Helopanoplia sp. Hay 1908
Database 2005 2 specimens
Reptilia - Baenidae
? Baenidae indet. Cope 1882
Database 2005 2 specimens
Plesiobaena antiqua (Lambe 1902)
Database 2005 1 specimen
Reptilia
Compsemys victa (Leidy 1856)
Database 2005 1 specimen
Reptilia - Sauria
Sauria indet. MacCartney 1802
Database 2005 3 specimens
Reptilia
Champsosaurus sp. Cope 1876
Database 2005 3 specimens
Reptilia - Dinosauria
Dinosauria indet. Owen 1842
Database 2005 1 specimen
Reptilia - Theropoda
Theropoda indet. Marsh 1881
Database 2005 6 specimens
Reptilia - Dromaeosauridae
Richardoestesia sp. Currie et al. 1990
Database 2005 1 specimen
Saurornitholestinae indet. Longrich and Currie 2009
Larson and Currie 2013 2 specimens
UCMP 186960, 187038
Reptilia
Aves indet. Linnaeus 1758
Database 2005 2 specimens
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
Database 2005 1 specimen
Reptilia - Hadrosauridae
Hadrosauridae indet. Cope 1869
Database 2005 1 specimen
Reptilia - Crocodylia
Crocodylia indet. (Owen 1842)
Database 2005 1 specimen
Reptilia
Brachychampsa sp. Gilmore 1911
Database 2005 1 specimen
Reptilia - Crocodylidae
Crocodylidae indet. Cuvier 1807
Database 2005 3 specimens
Chondrichthyes
Chondrichthyes indet. Huxley 1880
Database 2005 1 element
Chondrichthyes - Rajiformes
Rajiformes indet. Berg 1940
Database 2005 2 elements
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
Database 2005 2 elements
UCMP 129122, 1 tooth; UCMP 129121, 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, 106.3° West (view map)
Paleocoordinates:54.2° North, 79.3° 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
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),sieve,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:UCMP
Metadata
Also known as:UCMP V-75178
Database number:14653
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 10:59:35
Access level:the public Released:1994-04-30 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:

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]