EastLake ( of the United States)

Where: San Diego County, California (32.9° N, 117.1° W: paleocoordinates 31.6° N, 108.9° W)

• coordinate based on political unit

When: Otay Formation, Arikareean (30.8 - 20.4 Ma)

Environment/lithology: terrestrial

Primary reference: T. A. Deméré. 1988. SEPM Pacific Section Symposium 58 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 17497: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• from 63 sites spanning a 56 m interval; an ash dated at 28.86 Ma (SCLF Ar-Ar) is about 100 m above
"over 600 isolated jaws" of Sespia, but total NISP not clear
Aves
 Galliformes - Odontiphorinidae
Odontiphorinidae indet.2 Gould 1844 quail
Mammalia
 Rodentia - Cricetidae
Leidymys sp. Wood 1936 mouse
 Rodentia - Aplodontidae
Meniscomys sp. Cope 1878 mountain beaver
 Rodentia - Sciuridae
Protosciurus sp. Black 1963 squirrel
 Rodentia -
Geomyoidea indet.1 Bonaparte 1845 rodent
 Rodentia - Heteromyidae
Heteromyidae indet. Gray 1868 rodent
 Lagomorpha - Leporidae
Palaeolagus sp. Leidy 1856 rabbit
 Lipotyphla - Erinaceidae
cf. Ocajila sp. Macdonald 1963 hedgehog
 Lipotyphla - Geolabididae
Centetodon sp. Marsh 1872 placental
 Perissodactyla - Rhinocerotidae
Subhyracodon sp. Wood 1927 rhinoceros
 Carnivora - Canidae
Canidae indet. Fischer 1817 canid
"Nothocyon"/"Cynodictis"
Mesocyon coryphaeus4 Cope 1879 canid
 Carnivora - Nimravidae
Nimravus sp. Cope 1879 false sabre-tooth
 Ungulata - Merycoidodontidae
Merycoidodontidae indet.1 Cook 1912 oreodont
Sespia californica Stock 1930 oreodont
 Ungulata - Camelidae
Stenomylini indet.3 Prothero 1996 camel
said to be new; includes both "Miotylopus sp." and "cf. Dyseotylopus sp."
 Ungulata - Hypertragulidae
Hypertragulus calcaratus1 Cope 1873 ruminant
 Hyaenodonta - Hyaenodontidae
Hyaenodon sp. Laizer and Parieu 1838 eutherian