Rancho del Oro (Eocene of the United States)

Also known as SDSNH 3431-3437, 3441, 3442, 3444-3446, 3449, 3451, 3461-3464, 3466, 3467

Where: San Diego County, California (33.2° N, 117.3° W)

• Paleocoordinates: 38.2° N, 96.6° W (Wright 2013)

• coordinate based on political unit

• small collection-level geographic resolution

When: upper Member (Santiago Formation), Uintan (46.2 - 39.7 Ma)

Environment/lithology: terrestrial; siliciclastic sediments

Size class: macrofossils

Primary reference: S. L. Walsh. 1991. Eocene mammal faunas of San Diego County. Pacific Section SEPM 68:161-178 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 16615: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• while the small mammals are listed separately for each locality, the large mammals are not
does not include SDSNH 3438, 3439, and 3447, this is a lapsus: Walsh 1996b
Mammalia
 Tribosphenida - Peradectidae
Peradectes californicus4 Stock 1936 marsupial
 Primates - Omomyidae
Dyseolemur pacificus1 Stock 1934 tarsier
Ourayia sp.1 Gazin 1958 tarsier
 Primates - Microsyopidae
Uintasorex sp. Matthew 1909 primate
at SDSNH 3433: Rasmussen et al. 1995 DUPLICATE REF 3537 or 3538
 Rodentia - Cylindrodontidae
Pareumys sp. Peterson 1919 rodent
 Rodentia - Ischyromyidae
Ischyromyidae indet. Alston 1876 rodent
Eohaplomys cf. tradux1 Stock 1935 rodent
Microparamys woodi4 Kelly and Whistler 1994 rodent
"M. D Wood"; at SDSNH 3433: Rasmussen et al. 1995
 Rodentia -
Griphomys alecer4 Wilson 1940 rodent
 Rodentia - Eomyidae
Metanoiamys sp.1 Chiment and Korth 1996 rodent
 Rodentia - Simimyidae
Simimys simplex Wilson 1935 rodent
at SDSNH 3433: Rasmussen et al. 1995; also at SDSNH 3436, 3441, 3444, 3449, 3451, 3463, 3466: Walsh 1997 DUPLICATE REF 3537 or 3538
 Ferae -
"Tapocyon occidentalis" = Tapocyon robustus1
"Tapocyon occidentalis" = Tapocyon robustus1 Peterson 1919 placental
 Carnivora - Miacidae
Miocyon cf. scotti4 Wortman and Matthew 1899 carnivoran
 Perissodactyla - Brontotheriidae
Brontotheriidae indet.4 Marsh 1873 brontothere
compared to Duchesneodus uintensis; at SDSNH 3433: Rasmussen et al. 1995
 Perissodactyla -
Hesperaletes borineyi2 Colbert 2006 odd-toed ungulate
at SDSNH 3433: Rasmussen et al. 1995
 Perissodactyla - Hyracodontidae
? Triplopus woodi4 Stock 1936 odd-toed ungulate
probably "cf. Hyracodontidae indet."
 Artiodactyla - Agriochoeridae
Protoreodon walshi3 Theodor 1999 agriochoerid
SDSNH 3433, 3436, 3445; "P. sp." of Walsh 1996b; "P. cf. parvus"
 Artiodactyla - Protoceratidae
Leptoreodon sp. Wortman 1898 protoceratid
 Artiodactyla - Oromerycidae
Protylopus stocki1 Golz 1976 even-toed ungulate
 Soricomorpha - Geolabididae
Batodonoides powayensis Novacek 1976 placental
 Tribosphenida - Sespedectidae
Proterixoides davisi Stock 1935 placental
at SDSNH 3445: Walsh 1998 DUPLICATE REF 3537 or 3538
Sespedectes singularis1 Stock 1935 placental