Upper Lebo Loc. 51 (Paleocene of the United States)

Where: Sweetgrass County, Montana (45.8° N, 109.8° W: paleocoordinates 52.5° N, 86.9° W)

• coordinate based on political unit

When: "Fort Union" (= Lebo) Formation, Torrejonian (63.3 - 61.7 Ma)

Environment/lithology: terrestrial

Primary reference: G. G. Simpson. 1937. The Fort Union of the Crazy Mountain field, Montana and its mammalian faunas. Bulletin of the United States National Museum 169:1-287 [J. Alroy/J. Alroy/M. Carrano]more details

PaleoDB collection 14920: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• very similar to Silberling Quarry list
Mammalia
 Ferae - Viverravidae
Protictis (Protictis) sp.2 Matthew 1937 placental
 Tribosphenida - Arctocyonidae
"Mimotricentes subtrigonus" = Tricentes subtrigonus1, Chriacus baldwini1
"Mimotricentes subtrigonus" = Tricentes subtrigonus1 Cope 1881 condylarth
Chriacus baldwini1 Cope 1882 condylarth
 Ungulata - Hyopsodontidae
Litaletes disjunctus Simpson 1935 condylarth
Promioclaenus acolytus1 Cope 1882 condylarth
 Ungulata - Periptychidae
Anisonchus sectorius Cope 1881 condylarth
 Ungulata - Phenacodontidae
Tetraclaenodon cf. puercensis1 Cope 1881 condylarth
 Multituberculata - Eucosmodontidae
Stygimys jepseni1 Simpson 1935 multituberculate
 Multituberculata - Ptilodontidae
Ptilodus ? montanus Douglass 1908 multituberculate