UCMP V99370, Just Past Celeste's Microsite: Maastrichtian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Galagodon nordquistae
Wynd et al. 2020 3 specimens
UCMP 287582, 287585, 287586
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lonchidion selachos Estes 1964
Cook et al. 2014 4 specimens
UCMP 197837, fractured tooth; UCMP 197838, fractured tooth; UCMP 197839, fractured tooth; UCMP 287583
Chondrichthyes - Orectolobiformes - Orectolobidae
Restesia americana (Estes 1964)
Wynd et al. 2020 1 specimen
UCMP 287584
Acipenseriformes - Acipenseridae
Acipenser sp. Linnaeus 1758
3 specimens
Amphibia - Temnospondyli - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961
8 specimens
Prodesmodon copei Estes 1964
1 specimen
Amphibia - Temnospondyli - Urodela
Habrosaurus dilatus Gilmore 1928
4 specimens
Scapherpeton tectum Cope 1876
5 specimens
Mammalia - Multituberculata - Cimolomyidae
Meniscoessus sp. Cope 1882
Donohue et al. 2013 1 specimen
Cimolomys sp. Marsh 1889
Donohue et al. 2013 3 specimens
Mammalia - Multituberculata - Cimolodontidae
Cimolodon sp. Marsh 1889
Donohue et al. 2013 5 specimens
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma sp. Jepsen 1940
Donohue et al. 2013 41 specimens
Reptilia - Baenidae
Baenidae indet. Cope 1882
19 specimens
Reptilia - Testudines - Chelydridae
Chelydridae indet. Swainson 1839
11 specimens
Reptilia - Testudines - Adocidae
Adocus sp. Cope 1868
2 specimens
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
24 specimens
Reptilia - Ankylosauridae
Ankylosauridae indet. Brown 1908
2 specimens
Reptilia - Pachycephalosauridae
Pachycephalosauridae indet. Sternberg 1945
5 specimens
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
22 specimens
Reptilia - Hadrosauridae
Hadrosauridae indet. Cope 1869
18 specimens
Reptilia
cf. Thescelosaurus sp. Gilmore 1913
1 specimen
Reptilia - Dromaeosauridae
Richardoestesia isosceles Sankey 2001
1 specimen
Dromaeosaurus albertensis Matthew and Brown 1922
2 specimens
Reptilia
Paronychodon lacustris Cope 1876
2 specimens
nomen dubium belonging to Paronychodon
Reptilia - Tyrannosauridae
Tyrannosauridae indet. Osborn 1906
8 specimens
Reptilia
Lepidosauria indet. Haeckel 1866
16 specimens
Actinopteri
Holostei informal indet. A (Müller 1846)
30 specimens
Holostei informal indet. B (Müller 1846)
2 specimens
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843
65 specimens
see common names

Geography
Country:United States State/province:Montana County:Garfield
Coordinates: 47.6° North, 106.9° West (view map)
Paleocoordinates:54.5° North, 79.4° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Formation:Hell Creek
Stratigraphic resolution:bed
Stratigraphy comments: lower part of formation
Lithology and environment
Primary lithology:tabular,medium,concretionary,ferruginous,intraclastic sandstone
Includes fossils?Y
Lithology description: "a medium-grained sanstone that fines upward. The fossil horizon is underlain by a clay-domminated mudstone and is capped by a medium-grained sandstone unit. Mudstone clasts, iron concretions, vertebrate fossils, and well-rounded, pebble-sized bone fragments are interbedded within the 40-cm-thick fossil-bearing sandstone. Shell hash is found throughout the unit." Unit is massive.
Environment:channel lag
Geology comments: "bioclast accumulation in a basal channel lag."
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
Size sorting:medium
Fragmentation:occasional
Spatial resolution:parautochthonous
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:bulk,selective quarrying,sieve,field collection
Reason for describing collection:taphonomic analysis
Museum repositories:UCM
Taxonomic list comments:"shell hash" not included in taxonomic list
Metadata
Also known as:JPC
Database number:85499
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2009-01-02 11:46:34 Last modified:2022-09-29 15:48:19
Access level:the public Released:2009-01-02 11:46:34
Creative Commons license:CC BY
Reference information

Primary reference:

28887.ETE L. E. Wilson. 2008. Comparative taphonomy and paleoecological reconstruction of two microvertebrate accumulations from the Late Cretaceous Hell Creek Formation (Maastrichtian), eastern Montana. Palaios 23:289-297 [M. Carrano/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]
46718 S. L. Donohue, G. P. Wilson, and B. H. Breithaupt. 2013. Latest Cretaceous multituberculates of the Black Butte Station local fauna (Lance Formation, southwestern Wyoming), with implications for compositional differences among mammalian local faunas of the Western Interior. Journal of Vertebrate Paleontology 33(3):677-695 [R. Benson/R. Benson/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]