Chappo Type Locality (Paleocene of the United States)

Also known as Type Chappo; Chappo Gulch; Chappo-17

Where: Lincoln County, Wyoming (41.8° N, 110.7° W: paleocoordinates 48.0° N, 91.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Chappo Member (Wasatch Formation), Tiffanian (61.7 - 56.8 Ma)

• said to be middle Tiffanian

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14936: authorized by John Alroy, entered by John Alroy on 30.04.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

• replaces earlier list of Dorr and Gingerich 1980
stratigraphic position relative to Buckman Hollow and Chappo Oil Well indeterminate, contra Gingerich 1976
Mammalia
 Cimolesta - Cimolestidae
Paleotomus sp.1 Van Valen 1967 eutherian
said to be new
 Cimolesta - Palaeoryctidae
Palaeoryctes cf. punctatus Van Valen 1966 eutherian
Palaeoryctes cruoris n. sp. Gunnell 1994 eutherian
 Cimolesta - Pantolestidae
Bessoecetor cf. septentrionalis3 Russell 1929 eutherian
 Leptictida - Leptictidae
Prodiacodon cf. concordiarcensis Simpson 1935 eutherian
Prodiacodon cf. furor Novacek 1977 eutherian
 Primates - Plesiadapidae
Chiromyoides minor n. sp. Gingerich 1975 primate
Plesiadapis cf. rex Gidley 1923 primate
 Primates - Picrodontidae
Picrodus sp.2 Douglass 1908 primate
 Primates - Carpolestidae
Carpodaptes cf. hazelae Simpson 1936 primate
 Primates - Paromomyidae
Ignacius frugivorus Matthew and Granger 1921 primate
 Tribosphenida - Phenacodontidae
Ectocion collinus Russell 1929 condylarth
Phenacodus grangeri Simpson 1935 condylarth
 Lipotyphla - Erinaceidae
Cedrocherus aceratus n. sp. Gunnell 1994 hedgehog
 Tribosphenida - Nyctitheriidae
Leptacodon cf. munusculum1 Simpson 1935 placental
 Creodonta - Oxyaenidae
Tytthaena parrisi Gingerich 1980 creodont
described by Gunnell and Gingerich 1991
 Ferae - Viverravidae
Protictis agastor Gingerich and Winkler 1985 placental
Protictis paralus Holtzman 1978 placental
Raphictis cf. gausion Gingerich and Winkler 1985 placental
 Macroscelidea -
Litocherus lacunatus Gazin 1956 elephant shrew
described by Gingerich 1983c
 Macroscelidea - Apheliscidae
Aletodon cf. quadravus Gingerich 1983 elephant shrew
described by Gingerich 1983c
Dorraletes diminutivus Dorr 1952 elephant shrew
described by Gingerich 1983c
 Macroscelidea -
"Diacocherus meizon" = Adunator meizon
"Diacocherus meizon" = Adunator meizon Gingerich 1983 elephant shrew
 Taeniodonta - Stylinodontidae
Stylinodontidae indet. taeniodont
apparently replaces "cf. Lampadophorus sp." of Dorr and Gingerich 1980
 Tribosphenida - Arctocyonidae
Claenodon "sp. small" Scott 1892 condylarth
Claenodon "sp. large" Scott 1892 condylarth
Lambertocyon gingerichi n. sp. Gunnell 1994 condylarth
Thryptacodon australis Simpson 1935 condylarth
Chriacus oconostotae Van Valen 1978 condylarth
 Acreodi - Mesonychidae
Dissacus sp. Cope 1881 condylarth
 Theriiformes - Peradectidae
Peradectes elegans Matthew and Granger 1921 metatherian
 Sarcobora - Apatemyidae
Unuchinia dysmathes Holtzman 1978 insectivoran
Labidolemur soricoides Matthew and Granger 1921 insectivoran
 Multituberculata - Neoplagiaulacidae
Ectypodus cf. powelli Jepsen 1940 multituberculate
Mesodma sp. Jepsen 1940 multituberculate
Neoplagiaulax cf. hunteri Simpson 1936 multituberculate
Neoplagiaulax cf. hazeni Jepsen 1940 multituberculate
 Multituberculata - Ptilodontidae
Ptilodus sp. Cope 1881 multituberculate
"C"
Ptilodus kummae Krause 1977 multituberculate