Cat-tail Spring (Eocene of the United States)

Also known as Cattail Springs

Where: Uinta County, Wyoming (41.2° N, 110.5° W: paleocoordinates 45.2° N, 96.8° W)

• coordinate based on political unit

When: upper Member (Bridger Formation), Bridgerian (50.3 - 46.2 Ma)

Environment/lithology: terrestrial

Primary reference: C. L. Gazin. 1976. Mammalian Faunal Zones of the Bridger Middle Eocene. Smithsonian Contributions to Paleobiology 26:1-25 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 16200: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• shown in map of Wheeler 1961 to be at the head of Big Dry Creek and very close to the Sage Creek White Layer; within Henry's Fork Divide according to map of West 1990
presumed to fall entirely in Bridger D based on available records
Mammalia
 Rodentia - Ischyromyidae
Thisbemys corrugatus6 Wood 1959 rodent
"presumably" Twin Buttes Mbr.
 Perissodactyla - Brontotheriidae
Mesatirhinus megarhinus1 Earle 1891 brontothere
 Perissodactyla - Hyrachyidae
Hyrachyus eximius5 Leidy 1871 odd-toed ungulate
D3
 Ferae - Viverravidae
Viverravus gracilis3 Marsh 1872 placental
level not stated
 Macroscelidea - Amphilemuridae
Scenopagus curtidens2 Matthew 1909 elephant shrew
level not known
 Ungulata - Uintatheriidae
Uintatherium anceps4 Marsh 1871 uintathere
includes types of "Tinoceras crassifrons" and "T. hians"; "either Bridger C or D"