Mission Valley Formation (SDSNH 4020) (Eocene of the United States)

Where: San Diego County, California (32.9° N, 117.1° W: paleocoordinates 33.1° N, 103.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Mission Valley Formation, Early/Lower Uintan (46.2 - 40.4 Ma)

Environment/lithology: terrestrial

Primary reference: S. L. Walsh. 1998. Notes on the anterior dentition and skull of Proterixoides (Mammalia: Insectivora: Dormaaliidae), and a new dormaaliid genus from the early Uintan (Middle Eocene) of southern California. Proceedings of the San Diego Society of Natural History 34:1-26 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 16778: authorized by John Alroy, entered by John Alroy on 21.09.1998, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Theriamorpha - Sespedectidae
Proterixoides davisi Stock 1935 placental
NISP "numerous"
 Rodentia - Simimyidae
Simimys simplex2 Wilson 1935 rodent
 Primates - Omomyidae
Walshina esmaraldensis1 López-Torres et al. 2018 tarsier