Pearson Ranch (Bed CS17) (Eocene of the United States)

Also known as LACM 3373, 5639, 5640, 5642, 5644

Where: Ventura County, California (34.3° N, 119.0° W: paleocoordinates 33.7° N, 107.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Sespe Formation, Duchesnean (39.7 - 37.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Reposited in the LACM

Primary reference: T. S. Kelly. 1990. Biostratigraphy of Uintan and Duchesnean land mammal assemblages from the Middle Member of the Sespe Formation, Simi Valley, California. Contributions in Science, Natural History Museum of Los Angeles County 419:1-42 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 16807: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Artiodactyla - Praetragulidae
Simimeryx hudsoni Stock 1934 ruminant
 Theriamorpha - Sespedectidae
Sespedectes singularis Stock 1935 placental
 Primates - Omomyidae
Chumashius balchi Stock 1933 tarsier