Kishenehn M-28R (Eocene of the United States)

Also known as Rasmussen bed

Where: Montana (48.4° N, 113.7° W: paleocoordinates 51.5° N, 101.5° W)

• coordinate stated in text

When: Coal Creek Member (Kishenehn Formation), Uintan (46.2 - 39.7 Ma)

Environment/lithology: lacustrine - large; marl

• mixed assemblage of marlstone, sandstone, siltstone, conglomerate, claystone, mudstone, and lignite

Size class: macrofossils

Primary reference: M. R. Dawson and K. N. Constenius. 2018. Mammalian fauna of the Middle Eoene Kishenehn Formation, Middle Fork of the Flathead River, Montana. Annals of Carnegie Museum 85(1):25-60 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 222922: authorized by Mark Uhen, entered by Mark Uhen on 28.10.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Lagomorpha - Leporidae
Leporidae indet. Fischer de Waldheim 1817 rabbit
 Rodentia - Sciuravidae
Pauromys sp. Troxell 1923 rodent
Pauromys lillegraveni
 Rodentia - Eomyidae
cf. Metanoiamys sp. Chiment and Korth 1996 rodent
 Rodentia - Ischyromyidae
Ischyromyidae indet. Alston 1876 rodent
sp. 3, 4
Microparamys sp. Wood 1959 rodent
near Microparamys sambucus
Microparamys solis n. sp. Dawson and Constenius 2018 rodent
 Primates - Microsyopidae
Uintasorex cf. parvulus Matthew 1909 primate
 Theriamorpha - Oligoryctidae
Oligoryctes sp. Hough 1956 placental
 Condylarthra - Hyopsodontidae
Hyopsodus sp. Leidy 1870 condylarth
near Hyopsodus paulus
 Theriamorpha - Peradectidae
Peradectes cf. californicus Stock 1936 marsupial
 Theriamorpha - Herpetotheriidae
Herpetotherium cf. knighti McGrew et al. 1959 marsupial
 Multituberculata - Neoplagiaulacidae
Ectypodus cf. lovei Sloan 1966 multituberculate