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Santiago - upper, San Diego County, California, USA

Formation	Santiago
Member	upper
Age:	46.2 - 40.4 Ma Eocene
Interval	Late Uintan
Lithology	siliciclastic
Number of Collections	2
Number of Occurrences	66

Recorded Sample Locations

Location	Region	Stratigraphic Name
Jeff's Discovery	San Diego County, California, USA	Santiago - upper
Rancho del Oro	San Diego County, California, USA	Santiago - upper

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Mesonychidae family	5	Animalia : Chordata : Mammalia : Cetacea : Mesonychidae	46.2 - 40.4 Ma Eocene
Protoreodon walshi species	7	Animalia : Chordata : Mammalia : Artiodactyla : Agriochoeridae : Protoreodon : *Protoreodon walshi*	46.2 - 40.4 Ma Eocene
Tapochoerus mcmillini species	7	Animalia : Chordata : Mammalia : Artiodactyla : Antiacodontidae : Tapochoerus : *Tapochoerus mcmillini*	46.2 - 40.4 Ma Eocene
Ibarus ignotus species	7	Animalia : Chordata : Mammalia : Artiodactyla : Leptochoeridae : Ibarus : *Ibarus ignotus*	46.2 - 40.4 Ma Eocene
Protylopus sp. genus	6	Animalia : Chordata : Mammalia : Artiodactyla : Oromerycidae : *Protylopus*	46.2 - 40.4 Ma Eocene
Protylopus stocki species	7	Animalia : Chordata : Mammalia : Artiodactyla : Oromerycidae : Protylopus : *Protylopus stocki*	46.2 - 40.4 Ma Eocene
Leptoreodon sp. genus	6	Animalia : Chordata : Mammalia : Artiodactyla : Protoceratidae : *Leptoreodon*	46.2 - 40.4 Ma Eocene
Leptoreodon golzi species	7	Animalia : Chordata : Mammalia : Artiodactyla : Protoceratidae : Leptoreodon : *Leptoreodon golzi*	46.2 - 40.4 Ma Eocene
Miacis hookwayi species	7	Animalia : Chordata : Mammalia : Carnivora : Miacidae : Miacis : *Miacis hookwayi*	46.2 - 40.4 Ma Eocene
Miocyon scotti species	7	Animalia : Chordata : Mammalia : Carnivora : Miacidae : Miocyon : *Miocyon scotti*	46.2 - 40.4 Ma Eocene
Procynodictis progressus species	7	Animalia : Chordata : Mammalia : Carnivora : Procynodictis : *Procynodictis progressus*	46.2 - 40.4 Ma Eocene
Chiroptera order	4	Animalia : Chordata : Mammalia : Chiroptera	46.2 - 40.4 Ma Eocene
Apataelurus sp. genus	6	Oxyaenidae : *Apataelurus*	46.2 - 40.4 Ma Eocene
Limnocyon sp. genus	6	Animalia : Chordata : Mammalia : Hyaenodontidae : *Limnocyon*	46.2 - 40.4 Ma Eocene
Apatemys downsi species	7	Animalia : Chordata : Mammalia : Apatemyidae : Apatemys : *Apatemys downsi*	46.2 - 40.4 Ma Eocene
Aethomylos simplicidens species	7	Animalia : Chordata : Mammalia : Holoclemensiidae : Aethomylos : *Aethomylos simplicidens*	46.2 - 40.4 Ma Eocene
Batodonoides powayensis species	7	Animalia : Chordata : Mammalia : Geolabididae : Batodonoides : *Batodonoides powayensis*	46.2 - 40.4 Ma Eocene
Centetodon sp. genus	6	Animalia : Chordata : Mammalia : Geolabididae : *Centetodon*	46.2 - 40.4 Ma Eocene
Proterixoides davisi species	7	Animalia : Chordata : Mammalia : Erinaceomorpha : Amphilemuridae : Proterixoides : *Proterixoides davisi*	46.2 - 40.4 Ma Eocene
Scenopagus sp. genus	6	Animalia : Chordata : Mammalia : Dormaaliidae : *Scenopagus*	46.2 - 40.4 Ma Eocene
Sespedectes singularis species	7	Animalia : Chordata : Mammalia : Erinaceomorpha : Amphilemuridae : Sespedectes : *Sespedectes singularis*	46.2 - 40.4 Ma Eocene
Herpetotherium innominatum species	7	Animalia : Chordata : Mammalia : Marsupialia : Herpetotheriidae : Herpetotherium : *Herpetotherium innominatum*	46.2 - 40.4 Ma Eocene
Oligoryctes sp. genus	6	Animalia : Chordata : Mammalia : Apternodontidae : *Oligoryctes*	46.2 - 40.4 Ma Eocene
Tapocyon dawsonae species	7	Animalia : Chordata : Mammalia : Carnivora : Viverravidae : Tapocyon : *Tapocyon dawsonae*	46.2 - 40.4 Ma Eocene
Tapocyon robustus species	7	Animalia : Chordata : Mammalia : Tapocyon : *Tapocyon robustus*	46.2 - 40.4 Ma Eocene
Peradectes californicus species	7	Animalia : Chordata : Mammalia : Peradectidae : Peradectes : *Peradectes californicus*	46.2 - 40.4 Ma Eocene
Tapiroidea superfamily	4.7	Animalia : Chordata : Mammalia : Perissodactyla : Tapiroidea	46.2 - 40.4 Ma Eocene
Amynodon advenus species	7	Animalia : Chordata : Mammalia : Perissodactyla : Amynodontidae : Amynodon : *Amynodon advenus*	46.2 - 40.4 Ma Eocene
Brontotheriidae family	5	Animalia : Chordata : Mammalia : Perissodactyla : Brontotheriidae	46.2 - 40.4 Ma Eocene
Triplopus woodi species	7	Animalia : Chordata : Mammalia : Perissodactyla : Hyracodontidae : Triplopus : *Triplopus woodi*	46.2 - 40.4 Ma Eocene
Hesperaletes borineyi species	7	Animalia : Chordata : Mammalia : Perissodactyla : Tapiridae : Hesperaletes : *Hesperaletes borineyi*	46.2 - 40.4 Ma Eocene
Uintasorex sp. genus	6	Animalia : Chordata : Mammalia : Primates : Microsyopidae : *Uintasorex*	46.2 - 40.4 Ma Eocene
Dyseolemur pacificus species	7	Animalia : Chordata : Mammalia : Primates : Anaptomorphidae : Dyseolemur : *Dyseolemur pacificus*	46.2 - 40.4 Ma Eocene
Ourayia sp. genus	6	Animalia : Chordata : Mammalia : Primates : Anaptomorphidae : *Ourayia*	46.2 - 40.4 Ma Eocene
Walshina shifrae species	7	Animalia : Chordata : Mammalia : Primates : Omomyidae : Walshina : *Walshina shifrae*	46.2 - 40.4 Ma Eocene
Pareumys sp. genus	6	Animalia : Chordata : Mammalia : Rodentia : Cylindrodontidae : *Pareumys*	46.2 - 40.4 Ma Eocene
Metanoiamys sp. genus	6	Animalia : Chordata : Mammalia : Rodentia : Eomyidae : *Metanoiamys*	46.2 - 40.4 Ma Eocene
Paradjidaumo sp. genus	6	Animalia : Chordata : Mammalia : Rodentia : Eomyidae : *Paradjidaumo*	46.2 - 40.4 Ma Eocene
Eohaplomys tradux species	7	Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Eohaplomys : *Eohaplomys tradux*	46.2 - 40.4 Ma Eocene
Ischyromyidae family	5	Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae	46.2 - 40.4 Ma Eocene
Manitshini tribe	5.5	Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Manitshini	46.2 - 40.4 Ma Eocene
Microparamys woodi species	7	Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Microparamys : *Microparamys woodi*	46.2 - 40.4 Ma Eocene
Rapamys fricki species	7	Animalia : Chordata : Mammalia : Rodentia : Ischyromyidae : Rapamys : *Rapamys fricki*	46.2 - 40.4 Ma Eocene
Griphomys alecer species	7	Animalia : Chordata : Mammalia : Rodentia : Gliridae : Griphomys : *Griphomys alecer*	46.2 - 40.4 Ma Eocene
Sciuravus powayensis species	7	Animalia : Chordata : Mammalia : Rodentia : Sciuravidae : Sciuravus : *Sciuravus powayensis*	46.2 - 40.4 Ma Eocene
Eumysops simplex species	7	Animalia : Chordata : Mammalia : Rodentia : Simimyidae : Simimys : *Eumysops simplex*	46.2 - 40.4 Ma Eocene
Gastropoda class	3	Animalia : Mollusca : Gastropoda	46.2 - 40.4 Ma Eocene
Pulmonata subclass	3.3	Animalia : Mollusca : Gastropoda : Pulmonata	46.2 - 40.4 Ma Eocene
Helicinidae family	5	Animalia : Mollusca : Gastropoda : Cycloneritida : Helicinidae	46.2 - 40.4 Ma Eocene

References

Roth B. (1991) Tropical ‘physiognomy’ of a land snail faunule from the Eocene of southern California [USA], Malacologia 33, 281-288

Walsh S. L. (1991) Eocene mammal faunas of San Diego County, Pacific Section SEPM 68, 161-178

Walsh S. L. (1996) Middle Eocene mammal faunas of San Diego County, California, The Terrestrial Eocene-Oligocene Transition in North America, 74-119

Theodor J. M. (1999) Protoreodon walshi, a new species of agriochoerid (Oreodonta, Artiodactyla, Mammalia) from the late Uintan of San Diego County, California, Journal of Paleontology 73 6, 1179-1190

Walsh S. L. (2000) Bunodont artiodactyls (Mammalia) from the Uintan (middle Eocene) of San Diego County, California, Proceedings of the San Diego Society of Natural History 37, 1-27

Alroy J. (2002) Synonymies and reidentifications of North American fossil mammals

Wesley G. D., Flynn J. J. (2003) A revision of Tapocyon (Carnivoramorpha), including analysis of the first cranial specimens and identification of a new species, Journal of Paleontology 77 4, 769-783

Ludtke J. A., Prothero D. R. (2004) Taxonomic revision of the Middle Eocene (Uintan-Duchesnean) protoceratid Leptoreodon (Mammalia: Artiodactyla), Paleogene Mammals 26, 101-112

Colbert M. W. (2006) Hesperaletes (Mammalia : Perissodactyla), a new tapiroid from the middle Eocene of southern California, Journal of Vertebrate Paleontology 26 3, 697-711 doi:10.1671/0272-4634(2006)26[697:HMPANT]2.0.CO;2

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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