Halfway Hollow (Dry Gulch Creek Member) (Eocene of the United States)
Also known as DUPLICATE REF 1438 or 1439
Where: Duchesne County, Utah (40.1° N, 110.2° W: paleocoordinates 43.0° N, 99.2° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Dry Gulch Creek Member (Duchesne River Formation), Uintan (46.2 - 39.7 Ma)
Environment/lithology: terrestrial
Primary reference: R. J. Emry. 1981. New material of the Oligocene muroid rodent Nonomys, and its bearing on muroid origins. American Museum Novitates 2712:1-14 [J. Alroy/J. Alroy/P. Mannion]more details
PaleoDB collection 16574: authorized by John Alroy, entered by John Alroy on 21.09.1998
Creative Commons license: CC BY (attribution)
Taxonomic list
• best exposures and type section of member are to the west of Roosevelt in Duchesne County, but some exposures are present in Uintah County
stratigraphic position confirmed by Rasmussen et al. 1999b
this lists supersedes the "Halfway Member" list of Kay 1957
NOTE: some specimens from "Halfway Hollow" are actually from the Lapoint Member (see)
placed by West et al. 1987 in the Uintan, who claim without citation that some elements of the "Halfway fauna" derive from the Brennan Basin Member (this may refer to Five Miles South of Vernal (see)
zircon FT dates of 33.0 +/- 3.4 and 34.5 +/- 4.4 Ma reported by Bryant et al. 1989 have > 10% error
stratigraphic position confirmed by Rasmussen et al. 1999b
this lists supersedes the "Halfway Member" list of Kay 1957
NOTE: some specimens from "Halfway Hollow" are actually from the Lapoint Member (see)
placed by West et al. 1987 in the Uintan, who claim without citation that some elements of the "Halfway fauna" derive from the Brennan Basin Member (this may refer to Five Miles South of Vernal (see)
zircon FT dates of 33.0 +/- 3.4 and 34.5 +/- 4.4 Ma reported by Bryant et al. 1989 have > 10% error
Show authors, comments, and common names
| Mammalia | |
|
Amphicyonidae indet. Haeckel 1886 bear-dog | |
|
Duchesnehippus intermedius Peterson 1932 horse | |