Celeste's Magnificent Microsite: Lancian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Galagadon nordquistae
Wynd et al. 2020 1 specimen
UCMP 556426
Amphibia - Temnospondyli - Urodela
Habrosaurus dilatus Gilmore 1928
Gardner and DeMar 2013
Paranecturus garbanii DeMar 2013
UCMP specimens (atlantes); author does not state which specimens come from which locality
Scapherpetontidae informal indet. 1 (Auffenberg and Goin 1959)
Gardner and DeMar 2013
"gen. et sp. nov. 1"
Amphibia - Temnospondyli - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961
Gardner and DeMar 2013
Amphibia - Temnospondyli - Albanerpetontidae
Albanerpetontidae indet. Fox and Naylor 1982
Gardner and DeMar 2013
Albanerpeton galaktion Fox and Naylor 1982
Gardner and DeMar 2013
Reptilia - Ceratopsidae
Triceratops sp. Marsh 1889
Scannella and Fowler 2014 1 individual
MOR 1167
Actinopteri
Teleostei informal indet. U-4 (Müller 1846)
Brinkman et al. 2021 2 specimens
UCMP 297017, one abdominal centrum
Osteoglossomorpha indet. Greenwood et al. 1966
Brinkman et al. 2021 29 specimens
= Coriops/Lopadichthys;
Actinopteri - Osteoglossiformes
? Wilsonichthys sp. Murray et al. 2016
Brinkman et al. 2021 35 specimens
Wilsonichthys sp. Murray et al. 2016
Murray et al. 2016 22 specimens
    = Wilsonichthys aridinsulensis Murray et al. 2016
Brinkman et al. 2021
UCMP 198883, dentary
Actinopteri - Hiodontiformes - Hiodontidae
Hiodontidae informal indet. small morph
Brinkman et al. 2021 9 specimens
UCMP 191590/, three centra of small size, including a first abdominal centrum
Hiodontidae informal indet. large morph
Brinkman et al. 2021 1 specimen
UCMP 191595, centrum of large size
Actinopteri - Esociformes - Esocidae
Estesesox sp. Wilson et al. 1992
Brinkman et al. 2021
UCMP 198885, three dentaries of intermediate size; UCMP 191591, centra type NvD and NvE
Actinopteri
Acanthomorpha informal indet. HC-1 (Rosen 1973)
Brinkman et al. 2021 1 specimen
spelled with current rank as Acanthomorphata
Acanthomorpha informal indet. HC-2 (Rosen 1973)
Brinkman et al. 2021 44 specimens
spelled with current rank as Acanthomorphata
UCMP 297015, one first centrum
Acanthomorpha informal indet. HC-3 (Rosen 1973)
Brinkman et al. 2021 2 specimens
spelled with current rank as Acanthomorphata
UCMP297016, two first abdominal centra
Acanthomorpha informal indet. HC-4 (Rosen 1973)
Brinkman et al. 2021 2 specimens
spelled with current rank as Acanthomorphata
Actinopteri - Percopsiformes
Percopsiformes indet. Berg 1940
Brinkman et al. 2021 2 specimens
UCMP 198884, two dentaries
Actinopteri
Otophysi informal indet. U-3/BvD
Brinkman et al. 2021 1 specimen
corrected as Otophysa
UCMP 191592, a third Weberian centrum (centrum type BvC)
Actinopteri - Gonorhynchiformes
Gonorhynchiformes informal indet. H
Brinkman et al. 2021 2 specimens
UCMP 191589, one first abdominal centrum (centrum type HvB)
Actinopteri - Gonorhynchiformes - Gonorhynchidae
Notogoneus sp. Cope 1885
Brinkman et al. 2021 1 specimen
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus pustulosus n. sp. Cook et al. 2014
Cook et al. 2014 135 specimens
UCMP 197869; UCMP 191578, 107 complete and fragmented teeth and one denticle; UCMP 191870, one complete tooth; UCMP 191872, one complete tooth; UCMP 191581, 24 denticles
Chondrichthyes
Cristomylus leptostemma n. sp. Wynd et al. 2020
Wynd et al. 2020 1 specimen
UWBM 111225
Chondrichthyes - Orectolobiformes - Hemiscylliidae
Chiloscyllium sp. Müller and Henle 1837
Cook et al. 2014 1 specimen
UCMP 191578, fractured tooth
Chondrichthyes - Orectolobiformes - Orectolobidae
Restesia americana (Estes 1964)
Cook et al. 2014 9 specimens
UCMP 191578, two complete teeth; UCMP 191581, five complete teeth; UCMP 191874, 191875
Chondrichthyes - Orectolobiformes - Ginglymostomatidae
Cantioscyllium estesi
Wynd et al. 2020 1 specimen
UCMP 191578
see common names

Geography
Country:United States State/province:Montana County:Garfield
Coordinates: 47.6° North, 106.9° West (view map)
Paleocoordinates:54.4° North, 80.0° 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
Key time interval:Lancian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Geological group:Montana Formation:Hell Creek Member:Lower
Stratigraphic resolution:bed
Stratigraphy comments: within lower three-quarters of Hell Creek Formation from approximately 76.4 to 19.5 m below the Hell Creek–Tullock formational contact
Lithology and environment
Primary lithology: silty sandstone
Includes fossils?Y
Lithology description: "silty sandstone?"
Environment:crevasse splay
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Museum repositories:UCMP,UWBM
Metadata
Also known as:UCMP V-99369, UWBM C1115, MOR HC-293; UCMP V99369
Database number:144502
Authorizer:P. Mannion, M. Carrano, P. Holroyd Enterer:P. Mannion, M. Carrano, P. Holroyd
Modifier:M. Carrano Research group:vertebrate
Created:2013-05-08 20:14:08 Last modified:2023-08-11 16:19:06
Access level:the public Released:2013-05-08 20:14:08
Creative Commons license:CC BY
Reference information

Primary reference:
46719. D. G. DeMar, Jr. 2013. A new fossil salamander (Caudata, Proteidae) from the Upper Cretaceous (Maastrichtian) Hell Creek Formation, Montana, U.S.A. Journal of Vertebrate Paleontology 33(3):588-598 [P. Mannion/P. Mannion/P. Holroyd]

Secondary references:

85648 D. B. Brinkman, J. D. Divay, D. G. DeMar and G. P. Wilson Mantilla. 2021. A systematic reappraisal and quantitative study of the nonmarine teleost fishes from the late Maastrichtian of the Western Interior of North America: evidence from vertebrate microfossil localities. Canadian Journal of Earth Sciences 58(9):936-967 [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]
65027 J. D. Gardner and D. G. DeMar. 2013. Mesozoic and Palaeocene lissamphibian assemblages of North America: a comprehensive review. Palaeobiodiversity and Palaeoenvironments 93:459-515 [P. Holroyd/P. Holroyd/M. Carrano]
64014 A. M. Murray, M. G. Newbrey, A. G. Neuman and D. B. Brinkman. 2016. New articulated osteoglossomorph from Late Cretaceous freshwater deposits (Maastrichtian, Scollard Formation) of Alberta, Canada. Journal of Vertebrate Paleontology 1-14 [P. Holroyd/P. Holroyd/P. Holroyd]
82752 J. B. Scannella and D. W. Fowler. 2014. A stratigraphic survey of Triceratops localities in the Hell Creek Formation, northeastern Montana (2006–2010). 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 503:313-332 [M. Carrano/M. Carrano]
84871 B. M. Wynd, D. G. DeMar, and G. P. Wilson. 2020. Euselachian diversity through the uppermost Cretaceous Hell Creek Formation of Garfield County, Montana, USA, with implications for the Cretaceous-Paleogene mass extinction in freshwater environments. Cretaceous Research 113:104483 [M. Carrano/M. Carrano]