Gas Tank Hill (Paleocene of the United States)

Also known as Flagstaff Peak; RAM Locality V20035; Utah loc. 42Em443V

Where: Emery County, Utah (39.0° N, 111.0° W: paleocoordinates 46.3° N, 89.5° W)

• coordinate based on political unit

When: North Horn Formation, Puercan (66.0 - 63.3 Ma)

Environment/lithology: "floodplain"

• "floodplains" (Lofgren et al. 2005)

Collection methods: surface (float)

Primary reference: S. F. Robison. 1986. Paleocene (Puercan-Torrejonian) mammalian faunas of the North Horn Formation, central Utah. Brigham Young University Geology Studies 33(1):87-133 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14739: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• about 180 m below upper contact of Fm.
Show authors, comments, and common names
Reptilia
 Loricata -
Crocodylia indet.2
Crocodylia indet.2 crocodilian
 Crocodylia - Alligatoridae
cf. Allognathosuchus sp.
cf. Allognathosuchus sp. Mook 1921 crocodilian
 Testudinata -
Compsemys victa
Compsemys victa Leidy 1856 turtle
Mammalia
 Multituberculata - Eucosmodontidae
Stygimys kuszmauli3
Stygimys kuszmauli3 Sloan and Van Valen 1965 multituberculate
 Condylarthra -
Desmatoclaenus sp.
Desmatoclaenus sp. Gazin 1941 placental
 Procreodi - Arctocyonidae
Loxolophus sp.
Loxolophus sp. Cope 1885 condylarth
 Theriamorpha - Periptychidae
Conacodon kohlbergeri1, Ectoconus ditrigonus, Anisonchus athelas
Conacodon kohlbergeri1 Archibald et al. 1983 condylarth
Ectoconus ditrigonus Cope 1882 condylarth
Anisonchus athelas Van Valen 1978 condylarth
Actinopteri
 Lepisosteiformes - Lepisosteidae
cf. Lepisosteus sp.
cf. Lepisosteus sp. Agassiz 1843 gar
Gastropoda
 Sorbeoconcha - Hydrobiidae
cf. Hydrobia sp.
cf. Hydrobia sp. Hartmann 1821 snail
Bivalvia
 Unionida - Unionidae
"Plesielliptio sp." = Elliptio (Plesielliptio)
"Plesielliptio sp." = Elliptio (Plesielliptio) Russell 1934 freshwater mussel
1Alroy 2002; 2Alroy 2007; 3Lofgren et al. 2005