Jeff's Discovery (Eocene of the United States)

Also known as SDSNH 3276

Where: San Diego County, California (33.2° N, 117.3° W: paleocoordinates 33.4° N, 104.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: upper Member (Santiago Formation), Late/Upper Uintan (46.2 - 40.4 Ma)

• reversed polarity: Prothero 2001

• bed-level stratigraphic resolution

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 16585: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Patricia Holroyd and Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• SDSNH Locs. 3560 - 3564 also belong to this L.F., but all small mammals are present at 3276, and most of the large mammals appear to be present here as well
Gastropoda
  -
Gastropoda indet.4 Cuvier 1797 snail
"high-spired pleurocerid or thiarid freshwater gastropods"
 Cycloneritimorpha - Helicinidae
Helicinidae indet.4 FĂ©russac 1822 snail
 Pulmonata -
Pulmonata indet.4 Cuvier 1817 pulmonate
"a minimum of five (and perhaps a maximum of ten) land snail species"
Mammalia
 Primates - Microsyopidae
Uintasorex sp. Matthew 1909 primate
 Primates - Omomyidae
"Phenacolemur cf. shifrae" = Walshina shifrae, Dyseolemur pacificus, Ourayia sp.
"Phenacolemur cf. shifrae" = Walshina shifrae Krishtalka 1978 tarsier
DUPLICATE REF 3537 or 3538
Dyseolemur pacificus Stock 1934 tarsier
Ourayia sp. Gazin 1958 tarsier
 Rodentia - Sciuravidae
Sciuravus powayensis6 Wilson 1940 rodent
 Rodentia - Simimyidae
Simimys simplex Wilson 1935 rodent
also at SDSNH 3650 - 3564: Walsh 1997 DUPLICATE REF 3537 or 3538
 Rodentia - Eomyidae
cf. Paradjidaumo sp.6 Burke 1934 rodent
Metanoiamys sp.1 Chiment and Korth 1996 rodent
 Rodentia -
Griphomys alecer1 Wilson 1940 rodent
 Rodentia - Ischyromyidae
Ischyromyidae indet. Alston 1876 rodent
large DUPLICATE REF 3537 or 3538
Manitshini indet.6 Simpson rodent
Rapamys fricki Wilson 1940 rodent
Microparamys woodi6 Kelly and Whistler 1994 rodent
"M. cf. D Wood"
Eohaplomys cf. tradux1 Stock 1935 rodent
 Rodentia - Cylindrodontidae
Pareumys sp. Peterson 1919 rodent
 Lipotyphla - Geolabididae
Batodonoides powayensis Novacek 1976 placental
Centetodon sp. Marsh 1872 placental
 Perissodactyla - Amynodontidae
Amynodon cf. advenus1 Marsh 1875 odd-toed ungulate
 Perissodactyla - Hyracodontidae
? Triplopus woodi6 Stock 1936 odd-toed ungulate
probably "cf. Hyracodontidae indet."
 Perissodactyla -
Hesperaletes borineyi2 Colbert 2006 odd-toed ungulate
 Tribosphenida - Apternodontidae
Oligoryctes sp.6 Hough 1956 placental
two forms; "Apternodontidae indet."
 Chiroptera -
Chiroptera indet. Blumenbach 1779 bat
a bat: two forms DUPLICATE REF 3537 or 3538
 Ferae -
Tapocyon dawsonae n. sp.8 Wesley and Flynn 2003 placental
 Carnivora - Miacidae
? Miacis cf. hookwayi6 Stock 1934 carnivoran
 Carnivora -
Procynodictis progressus6 Stock 1935 carnivoran
 Macroscelidea - Amphilemuridae
Scenopagus sp.6 McKenna and Simpson 1959 elephant shrew
Proterixoides davisi Stock 1935 elephant shrew
Walsh 1998 DUPLICATE REF 3537 or 3538
Sespedectes singularis Stock 1935 elephant shrew
also at SDSNH 3564: Walsh 1998 DUPLICATE REF 3537 or 3538
 Ungulata - Leptochoeridae
Ibarus cf. ignotus6 Storer 1984 even-toed ungulate
 Ungulata - Oromerycidae
Protylopus sp.6 Wortman 1898 even-toed ungulate
Protylopus stocki1 Golz 1976 even-toed ungulate
 Ungulata - Agriochoeridae
Protoreodon walshi5 Theodor 1999 agriochoerid
SDSNH 3276, 3560, 3561, 3562; "P. sp." of Walsh 1996b; "P. cf. parvus"
 Ungulata - Diacodexeidae
Tapochoerus mcmillini7 Walsh 2000 even-toed ungulate
SDSNH 3276, 3562, 3564; "? Antiacodon sp." of Walsh 1996b
 Ungulata - Protoceratidae
Leptoreodon golzi n. sp.3 Ludtke and Prothero 2004 protoceratid
 Insectivora -
Aethomylos simplicidens1 Novacek 1976 insectivoran
 Insectivora - Apatemyidae
Apatemys downsi1 Gazin 1958 insectivoran
 Acreodi - Mesonychidae
Mesonychidae indet.6 Cope 1875 condylarth
 Hyaenodonta -
Limnocyon sp.6 Marsh 1872 eutherian
 Theriiformes - Peradectidae
Peradectes californicus Stock 1936 metatherian
 Theriiformes - Herpetotheriidae
"Copedelphys cf. innominata" = Herpetotherium innominatum1
"Copedelphys cf. innominata" = Herpetotherium innominatum1 Simpson 1928 marsupial
 Oxyaenodonta - Oxyaenidae
cf. Apataelurus sp.6 Scott 1937