UM-Sub-Wy Locality 7: Clarkforkian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
Mammalia - Multituberculata
Dorr 1978
Mammalia - Phenacodontidae
Dorr 1978
Mammalia - Macroscelidea - Apheliscidae
Dorr 1978
Rose 1981
Mammalia - Coryphodontidae
"near C. testis"
Dorr 1978
Uhen and Gingerich 1995
Mammalia - Dinocerata - Prodinoceratidae
(7 measurements)
Thewissen and Gingerich 1987
some specimens are Coryphodon
Reptilia - Testudines
Testudines indet. Batsch 1788
see common names

Geography
Country:United States State/province:Wyoming County:Sublette
Coordinates: 43.3° North, 110.4° West (view map)
Paleocoordinates:52.1° North, 80.9° West (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period: Paleogene
10 m.y. bin: Cenozoic 1-2
*Period:Tertiary *Epoch:Paleocene
Key time interval: Clarkforkian
Age range of interval: 56.2 - 54.9 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Wasatch Member:Chappo
Local section:HbckC Local bed:2
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: "early Wasatchian-Graybull equivalent (probably early Graybull)... Hoback formation" (Dorr 1958) but Clarkforkian and Chappo Member according to later authors
Lithology and environment
Primary lithology:concretionary,ferruginous,brown silty "shale"
Lithology description: "dark brown, silty shale. Ironstone concretions were especially abundant near and against the bones" (Dorr 1958)
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Articulated whole bodies:none
Associated major elements:none
Disassociated major elements:some
Disassociated minor elements:some
Fragmentation:occasional
Temporal resolution:time-averaged
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:UMMP
Collection method comments: collected by "hand removal" (quarrying) (Dorr 1958)
Taxonomic list comments:"Waterworn fragments of large turtles are common... A few internal molds of gastropods were found in the quarry matrix" (Dorr 1958)
Metadata
Database number:15076
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy 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:
28631. J. A. Dorr, Jr. 1958. Prouintatherium, new uintathere genus, earliest Eocene, Hoback Formation, Wyoming, and the phylogeny of Dinocerata. Journal of Paleontology 32(3):506-516 [J. Alroy/J. Alroy]

Secondary references:

1375 J. A. Dorr, Jr. 1978. Revised and Amended Fossil Vertebrate Faunal Lists, Early Tertiary, Hoback Basin, Wyoming. Contributions to Geology, University of Wyoming 16(2):79-84 [J. Alroy/J. Alroy/J. Marcot]
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]
3402 J. G. M. Thewissen and P. D. Gingerich. 1987. Systematics and evolution of Probathyopsis (Mammalia, Dinocerata) from the late Paleocene and early Eocene of western North America. Contributions from the Museum of Paleontology, University of Michigan 27(8):195-219 [J. Alroy/J. Alroy/J. Alroy]
3476 M. D. Uhen and P. D. Gingerich. 1995. Evolution of Coryphodon (Mammalia, Pantodonta) in the late Paleocene and early Eocene of Northwestern Wyoming. Contributions from the Museum of Paleontology, University of Michigan 29(10):259-289 [J. Alroy/J. Alroy/M. Uhen]