FG-84 (Eocene of the United States)

Where: Big Horn County, Wyoming (44.6° N, 108.4° W: paleocoordinates 49.4° N, 91.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithified siliciclastic sediments

Size classes: macrofossils, mesofossils

Reposited in the UMMP

Collection methods: surface (float), surface (in situ)

Primary reference: T. M. Bown and K. D. Rose. 1987. Patterns of Dental Evolution in Early Eocene Anaptomorphine Primates (Omomyidae) from the Bighorn Basin, Wyoming. Paleontological Society Memoir 23:1-162 [J. Alroy/J. Alroy/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 15592: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Leah Gannon

Creative Commons license: CC BY (attribution)

Taxonomic list

• Wa-3
Mammalia
 Theriamorpha - Stylinodontidae
Ectoganus sp.1 Cope 1874 taeniodont
 Cimolesta - Apatemyidae
Labidolemur sp.1 Matthew and Granger 1921 eutherian
 Cimolesta - Coryphodontidae
Coryphodon eocaenus1 Owen 1846 pantodont
 Cimolesta - Esthonychidae
Esthonyx bisulcatus1 Cope 1874 tillodont
 Condylarthra - Hyopsodontidae
Hyopsodus loomisi1 McKenna 1960 condylarth
 Macroscelidea - Apheliscidae
Haplomylus speirianus1 Cope 1880 elephant shrew
 Acreodi - Mesonychidae
Pachyaena gracilis1 Matthew and Granger 1915 condylarth
 Theriamorpha - Phenacodontidae
Ectocion osbornianus1 Cope 1882 condylarth
Copecion brachypternus1 Cope 1882 condylarth
Phenacodus vortmani1 Cope 1880 condylarth
Phenacodus intermedius1 Granger 1915 condylarth
 Perissodactyla - Equidae
"Hyracotherium aemulor" = Arenahippus aemulor1
"Hyracotherium aemulor" = Arenahippus aemulor1 Gingerich 1991 horse
 Perissodactyla -
Homogalax protapirinus1 Wortman 1896 odd-toed ungulate
Cardiolophus radinskyi1 Gingerich 1991 odd-toed ungulate
 Procreodi - Arctocyonidae
Thryptacodon antiquus1 Matthew and Granger 1915 condylarth
 Artiodactyla - Diacodexeidae
Diacodexis metsiacus1 Cope 1882 even-toed ungulate
 Theriamorpha - Viverravidae
Viverravus acutus1 Matthew and Granger 1915 placental
Viverravus politus1 Matthew and Granger 1915 placental
Didymictis leptomylus1 Cope 1880 placental
Didymictis protenus1 Cope 1874 placental
 Theriamorpha -
Miacis deutschi1 Gingerich 1983 placental
 Creodonta - Oxyaenidae
Oxyaena gulo1 Matthew and Granger 1915 creodont
 Creodonta - Hyaenodontidae
Arfia shoshoniensis2 Matthew and Granger 1915 creodont
 Theriamorpha - Pantolestoidae
Palaeosinopa incerta1 Bown and Schankler 1982 placental
Palaeosinopa lutreola1 Matthew 1918 placental
 Rodentia - Ischyromyidae
Paramys taurus1 Korth 1984 rodent
 Primates - Paromomyidae
Phenacolemur simonsi1 Bown and Rose 1976 primate
 Primates - Omomyidae
Tetonius matthewi Bown and Rose 1987 tarsier
 Primates - Notharctidae
Cantius mckennai1 Gingerich and Simons 1977 primate
 Primates - Microsyopidae
Niptomomys doreenae1 McKenna 1960 primate
Arctodontomys wilsoni1 Szalay 1969 primate
 Multituberculata - Neoplagiaulacidae
Ectypodus tardus1 Jepsen 1940 multituberculate
Reptilia
 Squamata -
 Squamata - Anguidae
Melanosaurus sp.1 Gilmore 1928 squamates
 Testudines -
Testudines indet.1 Batsch 1788 turtle
 Crocodylia - Alligatoridae
Allognathosuchus sp.1 Mook 1921 crocodilian
Aves
  -
Aves indet.1 Linnaeus 1758 bird
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.1 Agassiz 1843 gar