PBDB Collection

Chappo Type Locality: Tiffanian, Wyoming

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Mammalia - Multituberculata - Neoplagiaulacidae

	Neoplagiaulax cf. hazeni (Jepsen 1940)		29 specimens

	Neoplagiaulax cf. hunteri (Simpson 1936)		10 specimens

	Ectypodus cf. powelli Jepsen 1940		5 specimens

	Mesodma sp. Jepsen 1940		26 specimens
Mammalia - Multituberculata - Ptilodontidae

	Ptilodus sp. Cope 1881		5 specimens
	"C"

	Ptilodus kummae Krause 1977		15 specimens
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 - 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 - Nyctitheriidae

	Leptacodon cf. munusculus		34 specimens
	= Leptacodon cf. munusculum Simpson 1935	Alroy 2002
Mammalia - Phenacodontidae

	Ectocion collinus Russell 1929		14 specimens

	Phenacodus grangeri Simpson 1935		10 specimens
Mammalia - Procreodi - Arctocyonidae

	Thryptacodon australis Simpson 1935		8 specimens

	Chriacus oconostotae Van Valen 1978		2 specimens

	Claenodon informal sp. small		1 specimen

	Claenodon informal sp. large		1 specimen

	Lambertocyon gingerichi n. sp. Gunnell 1994		33 specimens
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 paralus Holtzman 1978		7 specimens

	Protictis agastor Gingerich and Winkler 1985		1 specimen

	Raphictis cf. gausion Gingerich and Winkler 1985		4 specimens
Mammalia - Macroscelidea - Apheliscidae

	Aletodon cf. quadravus Gingerich 1983		1 specimen
	described by Gingerich 1983c

	Dorraletes diminutivus (Dorr 1952)		101 specimens
	described by Gingerich 1983c (1 measurement)
Mammalia - Macroscelidea

	Diacocherus meizon Gingerich 1983		71 specimens

	Litocherus lacunatus (Gazin 1956)		9 specimens
	described by Gingerich 1983c
Mammalia - Stylinodontidae

	Stylinodontidae indet. Marsh 1875		1 specimen
	apparently replaces "cf. Lampadophorus sp." of Dorr and Gingerich 1980
Mammalia - Cimolestidae

	Niphredil sp. Van Valen 1978		2 specimens
	said to be new
	= Paleotomus sp. Van Valen 1967	Alroy 2002
Mammalia - Apatemyidae

	Labidolemur soricoides Matthew and Granger 1921		15 specimens

	Unuchinia dysmathes Holtzman 1978		6 specimens
Mammalia - Proteutheria - Palaeoryctidae

	Palaeoryctes cruoris n. sp. Gunnell 1994		78 specimens
	(5 measurements)

	Palaeoryctes cf. punctatus Van Valen 1966		36 specimens
Mammalia - Leptictidae

	Prodiacodon cf. concordiarcensis Simpson 1935		1 specimen

	Prodiacodon cf. furor Novacek 1977		3 specimens
Mammalia

	Peradectes elegans Matthew and Granger 1921		28 specimens
see common names

Geography

Country:	United States	State/province:	Wyoming	County:	Lincoln
Coordinates:	41.8° North, 110.7° West (view map)
Paleocoordinates:	51.3° North, 79.7° West (Wright 2013)
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:	60.9 - 56.2 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:	2025-02-22 15:12:02
Access level:	the public	Released:	1994-04-30 00:00:00
Creative Commons license:	CC0

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]