Circle Locality (Paleocene of the United States)

Also known as Glen Waller Ranch

Where: McCone County, Montana (47.8° N, 106.1° W: paleocoordinates 53.1° N, 84.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Tongue River Member (Fort Union Formation), Tiffanian (61.7 - 56.8 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collection methods: surface (in situ),

Primary reference: R. M. West. 1970. Tetraclaenodon puercensis (Mammalia: Phenacodontidae), Goler Formation, Paleocene of California, and distribution of the genus. Journal of Paleontology 44(5):851-857 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14937: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

• Gunnell 1994 lists Ptilodus sp. "C"; not clear if this replaces P. montanus
Mammalia
 Multituberculata - Microcosmodontidae
"Microcosmodon woodi" = Allocosmodon woodi2
"Microcosmodon woodi" = Allocosmodon woodi2 Holtzman and Wolberg 1977 multituberculate
woodi
 Multituberculata - Neoplagiaulacidae
Ectypodus sp.2, "Parectypodus cf. laytoni" = Ectypodus laytoni2, Neoplagiaulax hunteri2
Ectypodus sp.2 Matthew and Granger 1921 multituberculate
"Parectypodus cf. laytoni" = Ectypodus laytoni2 Jepsen 1940 multituberculate
Neoplagiaulax hunteri2 Simpson 1936 multituberculate
 Multituberculata - Ptilodontidae
Ptilodus montanus2 Douglass 1908 multituberculate
 Theriamorpha - Plagiomenidae
Plagiomenidae indet.2 Matthew 1918 placental
 Primates - Microsyopidae
Microsyopidae indet.1 Osborn and Wortman 1892 primate
Navajovius sp.2 Matthew and Granger 1921 primate
confirmed by Gunnell 1989
 Primates - Paromomyidae
Ignacius frugivorus2 Matthew and Granger 1921 primate
Phenacolemurinae indet.1 Simpson 1955 primate
 Primates - Omomyidae
? Trogolemur sp.2 Matthew 1909 tarsier
biochronologically very implausible and genus not said by Archibald et al. 1987 to range into the Paleocene; but there is no description or discussion and no other published i.d.s of Trogolemur have been questioned in print
 Primates - Plesiadapidae
Plesiadapis cf. rex2 Gidley 1923 primate
 Primates - Carpolestidae
Carpodaptes hazelae2 Simpson 1936 primate
 Dermoptera -
Elpidophorus elegans2 Simpson 1927 colugo
 Theriamorpha - Nyctitheriidae
Leptacodon cf. tener2 Matthew and Granger 1921 placental
 Theriamorpha - Phenacodontidae
Ectocion cf. collinus1, "Tetraclaenodon pliciferus" = Tetraclaenodon puercensis
Ectocion cf. collinus1 Russell 1929 condylarth
"Tetraclaenodon pliciferus" = Tetraclaenodon puercensis Cope 1881 condylarth
 Procreodi - Arctocyonidae
Arctocyon cf. ferox2 Cope 1883 condylarth
Colpoclaenus cf. procyonoides1 Matthew 1937 condylarth
Thryptacodon cf. australis2 Simpson 1935 condylarth
Chriacus sp.1 Cope 1883 condylarth
 Macroscelidea - Apheliscidae
Haplaletes cf. disceptatrix2 Simpson 1935 elephant shrew
Litomylus cf. ishami2 Gazin 1956 elephant shrew
 Macroscelidea -
Litocherus lacunatus1 Gazin 1956 elephant shrew
 Proteutheria - Palaeoryctidae
Palaeoryctes sp.2 Matthew 1913 eutherian
 Cimolesta - Cimolestidae
Acmeodon sp.2 Matthew and Granger 1921 eutherian
 Cimolesta - Pantolestidae
Propalaeosinopa albertensis2 Simpson 1927 eutherian
Palaeosinopa sp.2 Matthew 1901 eutherian
 Cimolesta - Pentacodontidae
Bisonalveus sp.2 Gazin 1956 eutherian