Randlett Point (Eocene of the United States)
Also known as Randlett Fauna
Where: Uintah County, Utah (40.2° N, 109.9° W: paleocoordinates 43.0° N, 98.9° W)
• coordinate based on political unit
When: Brennan Basin Member (Duchesne River Formation), Uintan (46.2 - 39.7 Ma)
Environment/lithology: terrestrial
Primary reference: D. W. Andersen and M. D. Picard. 1972. Stratigraphy of the Duchesne River Formation (Eocene-Oligocene?), northern Uinta Basin northeastern Utah. Utah Geological and Mineraological Survey Bulletin 97:1-29 [J. Alroy/J. Alroy]more details
PaleoDB collection 16531: authorized by John Alroy, entered by John Alroy on 21.09.1998
Creative Commons license: CC BY (attribution)
Taxonomic list
• supersedes the "Randlett Member" list of Kay 1957
"Most of the fossils are from a single quarry near the base of the unit about 2 miles northeast of Randlett" (Uintah Co.); I have removed records that definitely do not pertain to this site, but retained all of their other "Brennan Basin Member" records
new records of Rasmussen et al. 1999b from "several localities": Simidectes cf. magnus Pareumys aff. milleri (same as P. sp. below??) Uintaceras sp. "brontothere, new genus and species" Leptotragulinae indet. Oromerycidae indet.
"Protadjidaumo typus" is not mentioned by Burke 1934a and is said to be "in error" by Rasmussen et al. 1999 because no catalogued specimens could be found
"Mesamynodon medius" is probably from the Lapoint Member, not the Brennan Basin Member: Wilson and Schiebout 1984
"Megalamynodon regalis" is not from this locality: Rasmussen et al. 1999b
"Pentacemylus progressus" is placed here apparently because Gazin 1955 said it was from the "Randlett horizon"; however, original data of Peterson 1931 place it at Leota Ranch in the "Duchesne Oligocene, near base" (i.e., in the upper Myton Mbr.)
"Most of the fossils are from a single quarry near the base of the unit about 2 miles northeast of Randlett" (Uintah Co.); I have removed records that definitely do not pertain to this site, but retained all of their other "Brennan Basin Member" records
new records of Rasmussen et al. 1999b from "several localities": Simidectes cf. magnus Pareumys aff. milleri (same as P. sp. below??) Uintaceras sp. "brontothere, new genus and species" Leptotragulinae indet. Oromerycidae indet.
"Protadjidaumo typus" is not mentioned by Burke 1934a and is said to be "in error" by Rasmussen et al. 1999 because no catalogued specimens could be found
"Mesamynodon medius" is probably from the Lapoint Member, not the Brennan Basin Member: Wilson and Schiebout 1984
"Megalamynodon regalis" is not from this locality: Rasmussen et al. 1999b
"Pentacemylus progressus" is placed here apparently because Gazin 1955 said it was from the "Randlett horizon"; however, original data of Peterson 1931 place it at Leota Ranch in the "Duchesne Oligocene, near base" (i.e., in the upper Myton Mbr.)
Show authors, comments, and common names
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Protoreodon pumilus Marsh 1875 agriochoerid "Protoreodon pumilus annectens": and "Mesagriochoerus primus" Peterson 1934b type, from "near base, Randlett Horizon... two miles east and north of Randlett Point, Uinta County"
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Mytonolagus petersoni Burke 1934 rabbit | |
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Pareumys sp. Peterson 1919 rodent | |
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Mytonomys robustus Peterson 1919 rodent includes "Leptotomus kayi" type of Burke 1934a from "Two miles northeast of Randlett Point"; see also Korth 1988b
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