Elk Creek (390 m): Wasatchian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
Ectoganus simplex (Cope 1874)
    = Ectoganus gliriformis Cope 1874
Alroy 2002
Mammalia - Leptictidae
Prodiacodon tauricinerei (Jepsen 1930)
Mammalia - Rodentia - Ischyromyidae
Paramys cf. excavatus Loomis 1907
Mammalia - Primates - Notharctidae
Pelycodus sp. Cope 1875
    = Cantius sp. Simons 1962
Alroy 2002
"mckennai/trigonodus"
Mammalia - Primates - Paromomyidae
Phenacolemur sp. Matthew 1915
    = Phenacolemurinae indet. Simpson 1955
Alroy 2002
form "2"
Mammalia - Primates - Picromomyidae
Picromomys petersonorum n. sp. Rose and Bown 1996
Rose and Bown 1996
from USGS D-2035, Big Horn Co. (1 measurement)
Mammalia - Primates - Omomyidae
Tetonius sp. Matthew 1915
Bown and Rose 1987
T. matthewi-ambiguus intergrade; Y-80
Mammalia - Geolabididae
Batodonoides vanhouteni Bloch et al. 1998
Bloch et al. 1998
USGS D-2035 DUPLICATE REF 1100 or 1101 (1 measurement)
Mammalia - Phenacodontidae
Phenacodus brachypternus Cope 1882
    = Copecion brachypternus Cope 1882
Alroy 2002
described by Thewissen 1990: from YM-421
Phenacodus primaevus (Cope 1873)
    = Phenacodus sp. Cope 1873
Alroy 2002
Mammalia - Diacodexeidae
Diacodexis metsiacus (Cope 1882)
    = Diacodexis sp. Cope 1882
Alroy 2002
Bunophorus etsagicus (Cope 1882)
    = Bunophorus grangeri Sinclair 1914
Stucky and Krishtalka 1990
Diacodexis robustus Sinclair 1914
    = Bunophorus robustus Sinclair 1914
Alroy 2002
Mammalia - Creodonta - Oxyaenidae
Oxyaena forcipata Cope 1874
Gunnell and Gingerich 1991
"O. intermedia/forcipata"
Mammalia - Creodonta
Prolimnocyon atavus Matthew and Granger 1915
Gingerich and Deutsch 1989
YPM 421
Didelphodus absarokae (Cope 1881)
Mammalia - Creodonta - Hyaenodontidae
Tritemnodon strenua
    = Tritemnodon strenuus Cope 1875
Alroy 2002
Prototomus robustus (Matthew and Granger 1915)
Gingerich and Deutsch 1989
YPM 421; may = "P. sp. 1"
Prototomus viverrinus Cope 1874
Gingerich and Deutsch 1989
recombined as Sinopa viverrinus
YPM 421; may = "P. sp. 1"
Mammalia - Viverravidae
Didymictis protenus (Cope 1874)
Polly 1997
YM-421; "D. curtidens/lysitensis"
Viverravus acutus Matthew and Granger 1915
Polly 1997
YM-421; "V. acutus/gracilis"
Mammalia
Miacis exiguus Matthew and Granger 1915
    = Miacis petilus Gingerich 1983
Gingerich 1983
from YPM 421
Vulpavus australis Matthew and Granger 1915
described by Gingerich 1983a: YPM 421
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus sp. Leidy 1870
"loomisi/minor"
Mammalia - Coryphodontidae
Coryphodon sp. (Owen 1845)
original and current combination Lophiodon (Coryphodon)
"2"
Mammalia - Esthonychidae
Esthonyx bisulcatus Cope 1874
Reptilia - Xantusiidae
Palaeoxantusia sp. Hecht 1956
Smith 2011 8 specimens
USNM 527883 (left dentary fragment), 527884, 527885 (left maxilla fragments), 527886 (right maxilla fragment), 527887 (left maxilla fragment), 527956 (partial right dentary), 527960 (left maxilla; Text-fig. 6A), 527965 (right dentary; Textfig. 6B).
Reptilia
Scincoideus sp. Folie et al. 2005
Smith 2011 22 specimens
USNM 527823 (right dentary fragment), 527824 (left maxilla fragment), 527825 (partial premaxilla; Text-fig. 7A), 527840 (left dentary fragment), 527889 (left maxilla fragment), ?527890 (left dentary fragment), 527891 (right dentary fragment), 527893 (right dentary fragment), 527894 (jaw fragment), 527895 (right dentary fragment), 527896, 527897 (right dentary fragment), 527898 (left dentary fragment), 527899 (right maxilla fragment; Text-fig. 7B), 527900 (left dentary fragment; Textfig. 7C), 527901–527905 (jaw fragments), 527906 (right maxilla fragment), 527907 (premaxilla fragment).
Reptilia - Iguanidae
Paranolis delicatus n. gen., n. sp. Smith 2011
Smith 2011 2 specimens
USNM 527969 (holotype), left dentary; Referred specimen: USNM 527944 (partial left jugal; Textfig. 5A). "This specimen is not in the syntype."
Suzanniwana sp. Smith 2009
Smith 2011 23 specimens
USNM 527830 (jaw fragment), 527831 (maxilla fragment), ?527833 (jaw fragment), 527835 (fragment of articulated right dentary and splenial; Text-fig. 2H), 527837 (fragment of articulated right dentary and splenial; Text-fig. 2I), 527838 (partial left dentary; Text-fig. 2G), 527839 (partial left dentary), 527841, 527842 (left dentary fragments), 527845 (right dentary fragment; Text-fig. 2E), 527846 (left maxilla fragment), 527847 (right maxilla fragment; Text-fig. 2C), ?527848 (left dentary fragment), 527853, 527854 (jaw fragments), 527855 (left maxilla fragment), 527856 (right dentary fragment), ?527859, ?527860 (jaw fragments), 527877 (premaxilla fragment; Text-fig. 2A), 527967 (partial right dentary; Text-fig. 2D), 527974 (right maxilla; Text-fig. 2B), 527979 (partial left dentary; Text-fig. 2F).
Anolbanolis geminus n. sp. Smith 2011
Smith 2011 18 specimens
USNM 527980 (holotype), partial right maxilla; Paratypes: USNM 527815 (partial left dentary; Text-fig. 4E), 527816 (left mandible fragment), 527828 (jaw fragment), ?527832 (left maxilla fragment), 527836 (portion of articulated right dentary and splenial; Text-fig. 4F), 527843 (jaw fragment), 527844 (right dentary fragment), 527849 (left dentary fragment), 527852 (jaw fragment), 527861, 527862 (left dentary fragments), 527870 (partial right dentary), 527941 (partial left postorbital; Text-fig. 4D), 527981 (partial right dentary), 527983 (partial right dentary). Referred specimens: 527876 (partial premaxilla; Text-fig. 4A), 527931 (partial left pterygoid; Text-fig. 4C).
Reptilia
Anguimorpha informal sp. 2 Fürbringer 1900
Smith 2011 3 specimens
USNM 527822, 527874 (jaw fragments), 527961 (left dentary).
cf. Saniwa sp. Leidy 1870
Smith 2011 3 specimens
USNM 527911 (right maxilla fragment; Text-fig. 14A, B), 527912 (left dentary fragment; Text-fig. 14C), 527976 (left dentary fragment; Text-fig. 14D).
Reptilia - Anguidae
Glyptosaurinae indet. Marsh 1872
Smith 2011 1 specimen
USNM 527977 (right dentary fragment)
Proxestops sp. Gauthier 1982
Smith 2011 4 specimens
USNM 527868 (right dentary fragment; Text-fig. 9B, 10B), 527869 (posterior jaw fragment; Text-fig. 10A), 527917 (left frontal fragment; Text-fig. 9A), 527975 (partial left dentary).
Glyptosaurus rhodinos n. sp. Smith 2011
Smith 2011 2 specimens
USNM 527814 (holotype), partial parietal; Paratype: USNM 527978 (partial right maxilla)
Gerrhonotinae indet. (Cope 1864)
Smith 2011 4 specimens
USNM 527863 (jaw fragment), 527865 (jaw fragment; Text-fig. 8), 527867 (left maxilla fragment), 527873 (left dentary fragment).
Reptilia
Anguimorpha informal sp. 1 Fürbringer 1900
Smith 2011 7 specimens
USNM 527817 (right maxilla fragment), 527819 (jaw fragment), 527820 (right dentary fragment), 527821 (right dentary fragment; Text-fig. 13), 527866 (left maxilla fragment), 527871 (left dentary fragment), 527872 (jaw fragment).
    = Entomophontes incrustatus Smith and Gauthier 2013
Smith and Gauthier 2013
(same specimens as above)
Entomophontes hutchisoni n. sp. Smith and Gauthier 2013
Smith and Gauthier 2013 3 specimens
USNM 527961 (holotype), left dentary; Paratypes: USNM 527822 (jaw fragment), 527874 (jaw fragment).
Reptilia - Necrosauridae
Provaranosaurus sp. Gilmore 1942
Smith 2011 1 specimen
USNM 527970 (right dentary fragment).
see common names

Geography
Country:United States State/province:Wyoming County:Big Horn
Coordinates: 44.5° North, 108.0° West (view map)
Paleocoordinates:49.2° North, 90.8° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
*Period:Tertiary
Key time interval:Wasatchian
Age range of interval:55.80000 - 50.30000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Willwood
Local section:ElkCr Local bed:390 m
Local order:bottom to top
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:Dorsey Quarry placed at 397 m level by Bloch et al. 1998
Metadata
Also known as:USGS D-2035 (Dorsey Quarry); YPM 80, 421; USNM D2035Q
Database number:15534
Authorizer:J. Alroy, P. Barrett Enterer:J. Alroy, T. Cleary
Modifier:T. Cleary Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2016-09-06 09:45:06
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

3021. D. M. Schankler. 1980. Faunal Zonation of the Willwood Formation in the Central Bighorn Basin, Wyoming. University of Michigan Papers on Paleontology 24:99-114 [J. Alroy/J. Alroy/M. Uhen]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1100 J. I. Bloch, K. D. Rose, and P. D. Gingerich. 1998. New species of Batodonoides (Lipotyphla, Geolabididae) from the early Eocene of Wyoming: smallest known mammal?. Journal of Mammalogy 79(3):804-827 [J. Alroy/J. Alroy/J. Alroy]
1123 T. M. Bown and K. D. Rose. 1987. Patterns of Dental Evolution in Early Eocene Anaptomorphine Primates (Omomyidae) from the Bighorn Basin, Wyoming. Paleontological Society Memoir 23:1-162 [J. Alroy/J. Alroy/J. Ju]
1650 P. D. Gingerich. 1983. Paleocene-Eocene faunal zones and a preliminary analysis of Laramide structural deformation in the Clarks Fork Basin, Wyoming. Wyoming Geological Association Guidebook 34:185-195 [J. Alroy/J. Alroy/M. Uhen]
1666 P. D. Gingerich and H. A. Deutsch. 1989. Systematics and Evolution of Early Eocene Hyaenodontidae (Mammalia, Creodonta) in the Clarks Fork Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 27(13):327-391 [J. Alroy/J. Alroy/J. Marcot]
1745 G. F. Gunnell and P. D. Gingerich. 1991. Systematics and Evolution of Late Paleocene and Early Eocene Oxyaenidae (Mammalia, Creodonta) in the Clarks Fork Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 28(7):141-180 [J. Alroy/J. Alroy/J. Marcot]
2787 P. D. Polly. 1997. Ancestry and Species Definition in Paleontology: A Stratocladistic Analysis of Paleocene-Eocene Viverravidae (Mammalia, Carnivora) from Wyoming. Contributions from the Museum of Paleontology, University of Michigan 30(1):1-53 [J. Alroy/J. Alroy/M. Uhen]
2966 K. D. Rose and T. M. Bown. 1996. A new plesiadapiform (Mammalia: Plesiadapiformes) from the early Eocene of the Bighorn Basin, Wyoming. Annals of Carnegie Museum 65(3):305-321 [J. Alroy/J. Alroy/M. Uhen]
60297 K. T. Smith. 2011. The long-term history of dispersal among lizards in the early Eocene: new evidence from a microvertebrate assemblage in the Bighorn Basin of Wyoming, USA. Palaeontology 54(6):1243-1270 [P. Barrett/T. Cleary]
60296 K. T. Smith and J. A. Gauthier. 2013. Early Eocene lizards of the Wasatch Formation near Bitter Creek, Wyoming: diversity and paleoenvironment during an interval of global warming. Bulletin of the Peabody Museum of Natural History 54(2):135-230 [P. Barrett/T. Cleary]
3335 R. K. Stucky and L. Krishtalka. 1990. Revision of the Wind River Faunas, Early Eocene of Central Wyoming. Part 10. Bunophorus (Mammalia, Artiodactyla). Annals of Carnegie Museum 59(2):149-171 [J. Alroy/J. Alroy/J. Marcot]