Chappo Type Locality: Tiffanian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
Peradectes elegans Matthew and Granger 1921
28 specimens
Mammalia - Macroscelidea - Apheliscidae
Dorraletes diminutivus (Dorr 1952)
101 specimens
described by Gingerich 1983c (1 measurement)
Aletodon cf. quadravus Gingerich 1983
1 specimen
described by Gingerich 1983c
Mammalia - Macroscelidea
Litocherus lacunatus (Gazin 1956)
9 specimens
described by Gingerich 1983c
Diacocherus meizon Gingerich 1983
71 specimens
recombined as Adunator meizon
Mammalia - Primates - Paromomyidae
Ignacius frugivorus Matthew and Granger 1921
146 specimens
Mammalia - Primates - Carpolestidae
Carpodaptes cf. hazelae Simpson 1936
83 specimens
Mammalia - Primates - Picrodontidae
Picrodus cf. silberlingi Douglass 1908
3 specimens
(2 measurements)
    = Picrodus sp. Douglass 1908
Scott and Fox 2005
said to be new
Mammalia - Primates - Plesiadapidae
Plesiadapis cf. rex (Gidley 1923)
225 specimens
Chiromyoides minor n. sp. Gingerich 1975
8 specimens
(1 measurement)
Mammalia - Acreodi - Mesonychidae
Dissacus sp. Cope 1881
2 specimens
Mammalia - Creodonta - Oxyaenidae
Tytthaena parrisi Gingerich 1980
1 specimen
described by Gunnell and Gingerich 1991
Mammalia - Viverravidae
Protictis agastor Gingerich and Winkler 1985
1 specimen
Protictis paralus Holtzman 1978
7 specimens
Raphictis cf. gausion Gingerich and Winkler 1985
4 specimens
Mammalia - Procreodi - Arctocyonidae
Claenodon informal sp. small Scott 1892
1 specimen
Claenodon informal sp. large Scott 1892
1 specimen
Thryptacodon australis Simpson 1935
8 specimens
Chriacus oconostotae Van Valen 1978
2 specimens
Lambertocyon gingerichi n. sp. Gunnell 1994
33 specimens
Mammalia - Phenacodontidae
Ectocion collinus Russell 1929
14 specimens
Phenacodus grangeri Simpson 1935
10 specimens
Mammalia - Nyctitheriidae
Leptacodon cf. munusculus
34 specimens
    = Leptacodon cf. munusculum Simpson 1935
Alroy 2002
Mammalia - Pantolestidae
Propalaeosinopa cf. diluculi (Simpson 1935)
27 specimens
    = Bessoecetor cf. septentrionalis Russell 1929
Scott et al. 2002
Mammalia - Erinaceidae
Cedrocherus aceratus n. sp. Gunnell 1994
3 specimens
Mammalia - Proteutheria - Palaeoryctidae
Palaeoryctes cruoris n. sp. Gunnell 1994
78 specimens
(5 measurements)
Palaeoryctes cf. punctatus Van Valen 1966
36 specimens
Mammalia - Apatemyidae
Labidolemur soricoides Matthew and Granger 1921
15 specimens
Unuchinia dysmathes Holtzman 1978
6 specimens
Mammalia - Cimolestidae
Niphredil sp. Van Valen 1978
2 specimens
said to be new
    = Paleotomus sp. Van Valen 1967
Alroy 2002
Mammalia - Leptictidae
Prodiacodon cf. furor Novacek 1977
3 specimens
Prodiacodon cf. concordiarcensis Simpson 1935
1 specimen
Mammalia - Stylinodontidae
Stylinodontidae indet. Marsh 1875
1 specimen
apparently replaces "cf. Lampadophorus sp." of Dorr and Gingerich 1980
Mammalia - Multituberculata - Ptilodontidae
Ptilodus sp. Cope 1881
5 specimens
"C"
Ptilodus kummae Krause 1977
15 specimens
Mammalia - Multituberculata - Neoplagiaulacidae
Ectypodus cf. powelli Jepsen 1940
5 specimens
Mesodma sp. Jepsen 1940
26 specimens
Neoplagiaulax cf. hunteri (Simpson 1936)
10 specimens
Neoplagiaulax cf. hazeni (Jepsen 1940)
29 specimens
see common names

Geography
Country:United States State/province:Wyoming County:Lincoln
Coordinates: 41.8° North, 110.7° West (view map)
Paleocoordinates:48.0° North, 91.3° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Paleocene
10 m.y. bin:Cenozoic 1
*Period:Tertiary *Local age/stage:Middle Tiffanian
Key time interval:Tiffanian
Age range of interval:60.90000 - 56.20000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Wasatch Member:Chappo
Stratigraphy comments: said to be middle Tiffanian
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection size:38 specimens
Reason for describing collection:general faunal/floral analysis
Taxonomic list comments:replaces earlier list of Dorr and Gingerich 1980
stratigraphic position relative to Buckman Hollow and Chappo Oil Well indeterminate, contra Gingerich 1976
Metadata
Also known as:Type Chappo; Chappo Gulch; Chappo-17
Database number:14936
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:M. Uhen Research group:vertebrate
Created:1994-04-30 00:00:00 Last modified:2017-12-01 13:02:49
Access level:the public Released:1994-04-30 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
1731. G. F. Gunnell. 1994. Paleocene mammals and faunal analysis of the Chappo Type Locality (Tiffanian), Green River Basin, Wyoming. Journal of Vertebrate Paleontology 14(1):81-104 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1667 P. D. Gingerich and J. A. Dorr, Jr. 1979. Mandible of Chiromyoides minor (Mammalia, Primates) from the Upper Paleocene Chappo Member of the Wasatch Formation, Wyoming. Journal of Paleontology 53(3) [J. Alroy/J. Alroy/J. Ju]
9999 G. Hahn and C. Brauckmann. 1975. Zur Evolution von Carbonocoryphe (Trilobita; Unter-Karbon). Senckenbergiana lethaea 56(4/5):303-333 [D. Korn/D. Korn/D. Korn]
14679 C. S. Scott and R. C. Fox. 2005. Windows on the evolution of Picrodus (Plesiadapiformes: Primates): morphology and relationships of a species complex from the Paleocene of Alberta. Journal of Paleontology 79(4):635-657 [J. Alroy/J. Alroy]