Baldy Butte SW-Blazing Saddle: Lancian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes
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Osteichthyes indet.
Huxley 1880
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Database 2005 | 2 elements | ||||||||
Acipenseriformes
- Acipenseridae
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Acipenser sp.
Linnaeus 1758
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Database 2005 | 1 element | ||||||||
Actinopteri
- Esociformes
- Esocidae
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Estesesox foxi
Wilson et al. 1992
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Wilson et al. 1992 | 4 elements | ||||||||
Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteidae indet.
Cuvier 1825
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Database 2005 | 9 elements | ||||||||
Lepisosteus sp.
Agassiz 1843
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Database 2005 | 162 elements | ||||||||
Actinopteri
- Amiiformes
- Amiidae
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Amiidae indet.
Huxley 1861
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Database 2005 | 1 element | ||||||||
Amia sp.
Linnaeus 1766
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Database 2005 | 71 elements | ||||||||
Melvius thomasi
Bryant 1987
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Database 2005 | 39 elements | ||||||||
Amphibia
- Temnospondyli
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Anura indet.
(Fischer von Waldheim 1813)
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Database 2005 | 1 specimen | ||||||||
Amphibia
- Temnospondyli
- Batrachosauroididae
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Opisthotriton sp.
Auffenberg 1961
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Database 2005 | 7 specimens | ||||||||
Amphibia
- Temnospondyli
- Urodela
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Lisserpeton sp.
Estes 1965
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Database 2005 | 1 specimen | ||||||||
atlantes | ||||||||||
Scapherpeton tectum
Cope 1876
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Database 2005 | 3 specimens | ||||||||
Reptilia
- Squamata
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Squamata indet.
Oppel 1811
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Database 2005 | 3 specimens | ||||||||
Reptilia
- Xenosauridae
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Exostinus sp.
Cope 1873
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Database 2005 | 1 specimen | ||||||||
Reptilia
- Anguidae
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Anguidae indet.
Gray 1825
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Database 2005 | 17 specimens | ||||||||
Odaxosaurus piger
(Gilmore 1928)
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Database 2005 | 1 specimen | ||||||||
Reptilia
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Obamadon gracilis n. gen., n. sp.
Longrich et al. 2012
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Longrich et al. 2012 | 1 specimen | ||||||||
Holotype UCMP 128873, dentary | ||||||||||
Reptilia
- Chamopsiidae
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Chamops segnis
Marsh 1892
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Database 2005 | 1 specimen | ||||||||
Leptochamops denticulatus
(Gilmore 1928)
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Database 2005 | 1 specimen | ||||||||
Peneteius aquilonius
Estes 1969
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Database 2005 | 1 specimen | ||||||||
Reptilia
- Testudines
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Testudines indet.
Batsch 1788
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Database 2005 | 3 specimens | ||||||||
Cryptodira indet.
Cope 1868
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Database 2005 | 1 specimen | ||||||||
Helopanoplia distincta
Hay 1908
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Database 2005 | 1 specimen | ||||||||
Reptilia
- Testudines
- Nanhsiungchelyidae
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Basilemys sp.
Hay 1902
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Database 2005 | 1 specimen | ||||||||
Reptilia
- Testudines
- Trionychidae
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Trionychidae indet.
Gray 1825
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Database 2005 | 13 specimens | ||||||||
Reptilia
- Testudines
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? Kinosternidae indet.
(Hay 1892)
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Database 2005 | 1 specimen | ||||||||
spelled with current rank as Kinosternoidea | ||||||||||
Reptilia
- Testudines
- Adocidae
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Adocus sp.
Cope 1868
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Database 2005 | 20 specimens | ||||||||
Reptilia
- Testudines
- Chelydridae
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? Chelydridae indet.
Swainson 1839
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Database 2005 | 1 specimen | ||||||||
Reptilia
- Baenidae
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Baenidae indet.
Cope 1882
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Database 2005 | 1 specimen | ||||||||
Reptilia
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Compsemys victa
(Leidy 1856)
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Database 2005 | 2 specimens | ||||||||
Reptilia
- Crocodylia
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Leidyosuchus sp.
Lambe 1907
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Database 2005 | 23 specimens | ||||||||
= Crocodylia indet.
Owen 1842
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Alroy 2007 | |||||||||
Crocodylia indet.
(Owen 1842)
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Database 2005 | 3 specimens | ||||||||
Reptilia
- Crocodylidae
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Crocodylidae indet.
Cuvier 1807
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Database 2005 | 12 specimens | ||||||||
Reptilia
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Brachychampsa sp.
Gilmore 1911
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Database 2005 | 53 specimens | ||||||||
Reptilia
- Theropoda
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Theropoda indet.
Marsh 1881
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Database 2005 | 5 specimens | ||||||||
Megalosauridae indet.
(Fitzinger 1843)
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Database 2005 | 2 specimens | ||||||||
= Theropoda indet.
Marsh 1881
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Carrano 2025 | |||||||||
Reptilia
- Dromaeosauridae
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Richardoestesia sp.
Currie et al. 1990
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Database 2005 | 1 specimen | ||||||||
Reptilia
- Troodontidae
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Troodon sp.
Leidy 1856
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Sankey 2008 | 1 specimen | ||||||||
UCMP 128845 | ||||||||||
= cf. Pectinodon sp.
Carpenter 1982
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Larson and Currie 2013 | |||||||||
Reptilia
- Coeluridae
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Coelurosauridae indet.
Cope 1882
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Database 2005 | 3 specimens | ||||||||
synonym of Coeluridae | ||||||||||
Reptilia
- Hadrosauridae
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Hadrosauridae indet.
Cope 1869
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Database 2005 | 1 specimen | ||||||||
Reptilia
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Ceratopsia indet.
Marsh 1890
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Database 2005 | 11 specimens | ||||||||
Reptilia
- Ceratopsidae
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Ceratopsidae indet.
Marsh 1888
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Database 2005 | 18 specimens | ||||||||
Reptilia
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Champsosaurus sp.
Cope 1876
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Database 2005 | 2 specimens | ||||||||
Mammalia
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Mammalia indet.
Linnaeus 1758
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Database 2005 | 2 specimens | ||||||||
Mammalia
- Alphadontidae
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Alphadon sp.
Simpson 1927
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Database 2005 | 1 specimen | ||||||||
Mammalia
- Pediomyidae
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Pediomys florencae
Clemens 1966
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1 specimen | |||||||||
recombined as Protolambda florencae | ||||||||||
Pediomys krejcii
Clemens 1966
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2 specimens | |||||||||
recombined as Leptalestes krejcii | ||||||||||
Mammalia
- Glasbiidae
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Glasbius twitchelli
Archibald 1982
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1 specimen | |||||||||
Mammalia
- Gypsonictopidae
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Gypsonictops sp.
Simpson 1927
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1 specimen | |||||||||
Mammalia
- Multituberculata
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Multituberculata indet.
Cope 1884
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Database 2005 | 1 specimen | ||||||||
Mammalia
- Multituberculata
- Cimolodontidae
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Cimolodon nitidus
Marsh 1889
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4 specimens | |||||||||
Mammalia
- Multituberculata
- Neoplagiaulacidae
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Mesodma cf. formosa
(Marsh 1889)
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1 specimen | |||||||||
Mesodma hensleighi
Lillegraven 1969
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Database 2005 | 2 specimens | ||||||||
Mesodma thompsoni
Clemens 1964
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1 specimen | |||||||||
(1 measurement) | ||||||||||
Mammalia
- Multituberculata
- Cimolomyidae
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Essonodon browni
Simpson 1927
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Database 2005 | 1 specimen | ||||||||
Chondrichthyes
- Rajiformes
- Rhinobatidae
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Myledaphus bipartitus
Cope 1876
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Database 2005 | 26 elements | ||||||||
Chondrichthyes
- Hybodontiformes
- Lonchidiidae
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Lonchidion selachos
Estes 1964
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Database 2005 | 7 elements | ||||||||
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, 80.3° 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 |
Local section: | Baldy | Local bed: | 2 |
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 |
Degree of concentration: | concentrated |
Size of fossils: | macrofossils,mesofossils |
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-74116 | ||
Database number: | 14508 | ||
Authorizer: | J. Alroy, M. Carrano, R. Benson | Enterer: | J. Alroy, M. Carrano, R. Benson |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 1994-04-30 00:00:00 | Last modified: | 2021-05-05 11:12:57 |
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:
19636 | J. Alroy. 2007. Synonymies and reidentifications of North American fossil vertebrates and so forth. [J. Alroy/J. Alroy] | |
14199 | ETE | M. T. Carrano. 2025. 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] | |
43992 | N. R. Longrich, B.-A. S. Bhullar, and J. A. Gauthier. 2012. Mass extinction of lizards and snakes at the Cretaceous–Paleogene boundary. Proceedings of the National Academy of Sciences 109(52):21396-21401 [R. Benson/R. Benson/T. Liebrecht] | |
34479 | ETE | 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] |
45321 | M. V. H. Wilson, D. B. Brinkman, and A. G. Neuman. 1992. Cretaceous Esocoidei (Teleostei): early radiation of the pikes in North American fresh waters. Journal of Paleontology 66(5):839-846 [M. Bell/M. Bell] |