USNM Loc. 42222: Aptian - Albian, Wyoming
collected by M. Carrano 2005–2010

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Osteichthyes indet. (Huxley 1880)
1433 specimens
Actinopterygii
Actinopterygii indet. Cope 1887
84 specimens
Actinopteri - Pycnodontiformes - Pycnodontidae
aff. Pycnodontidae indet. (Agassiz 1833)
1 specimen
Actinopteri
Holostei indet. (Müller 1846)
574 specimens
Actinopteri - Lepisosteiformes
aff. Lepidotes sp. Agassiz 1832
4 specimens
Actinopteri - Semionotiformes
Semionotiformes indet. Arambourg and Bertin 1958
18 specimens
Actinopteri - Amiiformes
Amiiformes indet. Hay 1929
9 specimens
Actinopteri - Amiiformes - Amiidae
Amiidae informal indet. A Huxley 1861
46 specimens
Vidalamiinae indet. Grande and Bemis 1998
1 specimen
Dipnoi - Ceratodontidae
? Ceratodus sp. Agassiz 1838
3 specimens
Ceratodus cf. guentheri Marsh 1878
6 specimens
Ceratodus frazieri Ostrom 1970
2 specimens
Amphibia
Amphibia indet. (Linnaeus 1758)
46 specimens
Amphibia - Temnospondyli
Caudata indet. (Scopoli 1777)
14 specimens
Amphibia - Temnospondyli - Urodela
cf. Scapherpetontidae indet. (Auffenberg and Goin 1959)
5 specimens
Amphibia - Temnospondyli
Anura informal indet. A (Fischer von Waldheim 1813)
31 specimens
Anura indet. (Fischer von Waldheim 1813)
20 specimens
Amphibia - Temnospondyli - Albanerpetontidae
Albanerpeton sp. Estes and Hoffstetter 1976
51 specimens
Reptilia
Naomichelys speciosa Hay 1908
170 specimens
? Glyptops pervicax Hay 1908
37 specimens
nomen dubium belonging to Paracryptodira
Reptilia - Testudines
Testudines indet. Batsch 1788
18 specimens
Reptilia - Squamata
Squamata indet. Oppel 1811
9 specimens
Reptilia - Paramacellodidae
Paramacellodidae indet. Estes 1983
1 specimen
Reptilia - Teiidae
Teiidae informal indet. A Gray 1827
2 specimens
Ptilotodon wilsoni Nydam and Cifelli 2002
2 specimens
Reptilia
? Titanosauriformes indet. Salgado et al. 1997
133 specimens
Theropoda informal indet. A (Marsh 1881)
14 specimens
Theropoda informal indet. B (Marsh 1881)
5 specimens
Theropoda indet. (Marsh 1881)
44 specimens
Tetanurae indet. Gauthier 1986
2 specimens
? Aves indet. (Linnaeus 1758)
2 specimens
Reptilia - Dromaeosauridae
Deinonychus antirrhopus Ostrom 1969
72 specimens
Reptilia
Ornithischia indet. (Seeley 1888)
40 specimens
cf. Zephyrosaurus sp. Sues 1980
5 specimens
Ankylosauria indet. (Osborn 1923)
30 specimens
Reptilia - Nodosauridae
Sauropelta edwardsi Ostrom 1970
3 specimens
corrected as Sauropelta edwardsorum
Reptilia
cf. Atoposauridae indet. (Gervais 1871)
331 specimens
    = Mesoeucrocodylia indet. Whetstone and Whybrow 1983
Tennant et al. 2016
Reptilia - Bernissartiidae
cf. Bernissartidae indet. Dollo 1883
52 specimens
corrected as Bernissartiidae
Reptilia
cf. Pholidosauridae indet. (von Zittel and Eastman 1902)
257 specimens
Reptilia - Goniopholididae
cf. Goniopholididae indet. Cope 1875
9 specimens
Reptilia
Crocodylia indet. (Owen 1842)
190 specimens
Mammalia
Mammalia indet. (Linnaeus 1758)
7 specimens
Mammalia - Spalacotheriidae
Spalacotheriidae indet. Marsh 1887
1 specimen
Mammalia
Metatheria indet. (Huxley 1880)
1 specimen
Mammalia - Deltatheroida - Deltatheridiidae
cf. Oklatheridium sp. Davis et al. 2008
1 specimen
Mammalia - Eutriconodonta
Eutriconodonta indet. Kermack et al. 1973
5 specimens
Mammalia - Eutriconodonta - Triconodontidae
Alticonodontinae indet. Fox 1976
4 specimens
Mammalia - Multituberculata
Multituberculata indet. (Cope 1884)
2 specimens
? Paracimexomys sp. Archibald 1982
3 specimens
Chondrichthyes - Hybodontiformes
Hybodontoidea indet. Agassiz 1834
3 specimens
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lonchidion sp. Estes 1964
18 specimens
Malacostraca - Decapoda
Pleocyemata indet. Burkenroad 1963
2 specimens
crayfish gastroliths
see common names

Geography
Country:United States State/province:Wyoming County:Big Horn
Coordinates: 44.5° North, 107.8° West (view map)
Paleocoordinates:43.9° North, 59.9° West
Basis of coordinate:unpublished field data
Altitude:1338 meters
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Key time interval:Aptian - Albian
Age range of interval:121.40000 - 100.50000 m.y. ago
Stratigraphy
Formation:Cloverly Member:Little Sheep Mudstone
Stratigraphic resolution:bed
Stratigraphy comments: Unit V

D'Emic et al. 2019: Little Sheep Mudstone Member was deposited ca. 124–109 Ma in a time of low sediment supply.
Lithology and environment
Primary lithology:planar lamination,gray poorly lithified claystone
Includes fossils?Y
Lithology description: "5Y 7/1, laminated claystone with N8 mottling"
Environment:lacustrine indet.
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:good
Fragmentation:occasional
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:bulk,surface (float),sieve,field collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:USNM
Collectors:M. Carrano Collection dates:2005–2010
Metadata
Also known as:MTC WY-05013
Database number:137577
Authorizer:M. Carrano, P. Mannion Enterer:M. Carrano, P. Mannion
Modifier:G. Varnham Research group:vertebrate
Created:2012-12-18 04:06:40 Last modified:2022-01-27 06:41:30
Access level:the public Released:2012-12-18 04:06:40
Creative Commons license:CC BY
Reference information

Primary reference:

44000. M. P. J. Oreska, M. T. Carrano, and K. M. Dzikiewicz. 2013. Vertebrate paleontology of the Cloverly Formation (Lower Cretaceous), I: faunal composition, biogeographic relationships, and sampling. Journal of Vertebrate Paleontology 33(2):264-292 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

79303 M. D. D’Emic, B. Z. Foreman, N. A. Jud, B. B. Britt, M. Schmitz and J. L. Crowley. 2019. Chronostratigraphic Revision of the Cloverly Formation (Lower Cretaceous, Western Interior, USA). Bulletin of the Peabody Museum of Natural History 60(1):3-40 [P. Mannion/G. Varnham/G. Varnham]
59838 J. P. Tennant, P. D. Mannion, and P. Upchurch. 2016. Evolutionary relationships and systematics of Atoposauridae (Crocodylomorpha: Neosuchia): implications for the rise of Eusuchia. Zoological Journal of the Linnean Society 177:854-936 [P. Mannion/P. Mannion]