Buckman Hollow: Clarkforkian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Multituberculata - Ptilodontidae
Rose 1981
new UM specimen; described by Krause 1980, 1987b
Mammalia - Rodentia - Ischyromyidae
Paramys sp. Leidy 1871
Rose 1981
Mammalia - Primates - Carpolestidae
Rose 1981
Alroy 2002
Mammalia - Primates - Plesiadapidae
Plesiadapis rubeyi n. sp. Gazin 1942
(2 measurements)
Alroy 2002
includes "P. pearcei" type of Gazin 1956
Gazin 1956 1 specimen
Holroyd and Rankin 2014
Mammalia - Phenacodontidae
Ectocion sp. Cope 1882
Alroy 2002
"E. ralstonensis" and "E. cf. osbornianum" of Gazin 1956; Thewissen claims that E. osbornianus also is present, but this is "on the basis of the generally accepted age of the fauna"
Holroyd and Rankin 2014
Thewissen 1990
Alroy 2002
replaces ID of Gazin 1956
Phenacodus almiensis n. sp. Gazin 1942
Alroy 2002
Mammalia - Procreodi - Arctocyonidae
Rose 1981
(1 measurement)
Alroy 2002
replaces ID of Gingerich 1978
Secord 2008
"probably also belong to T. pseudarctos"
Gazin 1956 1 specimen
(1 measurement)
Mammalia - Acreodi - Mesonychidae
    = Dissacus sp. Cope 1881
Alroy 2002
DUPLICATE REF 1609 or 1610 or 1611 or 4269
Holroyd and Rankin 2014
based on USNM 16699 and 406145
Mammalia - Viverravidae
Rose 1981
Alroy 2002
replaces ID of Gazin 1956
Mammalia - Macroscelidea - Apheliscidae
Rose 1981
Mammalia
Lampadophorus sp. Patterson 1949
Rose 1981
    = Ectoganus sp. Cope 1874
Alroy 2002
Mammalia - Barylambdidae
Gingerich and Childress 1983
    = Barylambda faberi Patterson 1933
Alroy 2002
replaces ID of Rose 1981a
Mammalia - Dinocerata - Prodinoceratidae
Gazin 1956
confirmed by Wheeler 1961, Rose 1981a, Thewissen and Gingerich 1987; DUPLICATE REF 1609 or 1610 or 1611 or 4269
Holroyd and Rankin 2014
see common names

Geography
Country:United States State/province:Wyoming County:Lincoln
Coordinates: 41.3° North, 110.3° West (view map)
Paleocoordinates:50.1° North, 81.8° West (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Paleogene
10 m.y. bin: Cenozoic 1-2
*Period:Early/Lower Tertiary *Epoch:Late/Upper Paleocene
*Local age/stage:Clarkforkian
Key time interval: Clarkforkian
Age range of interval: 56.2 - 54.9 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Wasatch Member:Chappo
Lithology and environment
Primary lithology:pebbly,red conglomeratic claystone
Lithology description: "reddish, pebbly clay, partly conglomeratic"
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Collection size:73 specimens
Reason for describing collection:taxonomic analysis
Taxonomic list comments:see also Gazin 1956d, Rose 1981a
NISP 73
specimen counts based on Gazin 1956 and exclude new UM collections of Rose
appears to include "Chappo-12" and "Chappo-18" of Gingerich 1976
stratigraphic position relative to Chappo Type Locality and Chappo Oil Well indeterminate: see Dorr and Gingerich 1980; contra Gingerich 1976
Metadata
Also known as:Almy; La Barge Creek
Database number:15075
Authorizer:J. Alroy, P. Holroyd, M. Carrano Enterer:J. Alroy, P. Holroyd, M. Carrano
Modifier:E. Leckey Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2025-02-22 15:12:02
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC0
Reference information

Primary reference:
4268.5% 46360C. L. Gazin. 1942. Fossil Mammalia from the Almy Formation in western Wyoming. Journal of the Washington Academy of Sciences 32(7):217-220 [J. Alroy/J. Alroy/M. Carrano]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1609 C. L. Gazin. 1956. Palaeocene mammalian faunas of the Bison Basin in south-central Wyoming. Smithsonian Miscellaneous Collections 131(6):1-57 [J. Alroy/J. Alroy/M. Carrano]
4269 C. L. Gazin. 1956. The upper Paleocene Mammalia from the Almy formation in western Wyoming. Smithsonian Miscellaneous Collections 131(7):1-18 [J. Alroy/J. Alroy/M. Carrano]
1665 P. D. Gingerich and C. G. Childress, Jr. 1983. Barylambda churchilli, a New Species of Pantolambdidae (Mammalia, Pantodonta) from the Late Paleocene of Western North America. Contributions from the Museum of Paleontology, University of Michigan 26(8):141-156 [J. Alroy/J. Alroy/M. Uhen]
53741 P. A. Holroyd and B. D. Rankin. 2014. Additions to the latest Paleocene Buckman Hollow local fauna, Chappo Member of the Wasatch Formation, Lincoln County, southwestern Wyoming. Palaeontologia Electronica 17(1):16A:1-26 [P. Holroyd/P. Holroyd/P. Mannion]
2953 K. D. Rose. 1981. The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary. University of Michigan Papers on Paleontology 26:1-197 [J. Alroy/J. Alroy/P. Mannion]
63104 R. Secord. 2008. The Tiffanian Land-Mammal Age (middle and late Paleocene) in the northern Bighorn Basin, Wyoming. University of Michigan Papers on Paleontology 35:1-192 [K. Beard/K. Beard]
3401 J. G. M. Thewissen. 1990. Evolution of Paleocene and Eocene Phenacodontidae (Mammalia, Condylarthra). University of Michigan Papers on Paleontology 29:1-107 [J. Alroy/J. Alroy/P. Mannion]