Pampa Castillo (Miocene of Chile)

Where: Aisén, Chile (46.9° S, 72.3° W: paleocoordinates 47.6° S, 66.9° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Santacrucian (17.5 - 16.3 Ma)

• "a thick stratigraphic sequence, locally exposed as a prominent butte... approximately 300 m. thick sequence"; unit is "an unnamed formation, possibly equivalent to the Río Zeballos Formation"; mammals are from "Nine major mammal-bearing horizons... though the sequence is fossiliferous throughout"; much material is from "the rich quarry sites at the base of the terrestrial section (level E-O)"

• formation-level stratigraphic resolution

Environment/lithology: fluvial; sandstone and siltstone

• "northward-dipping fluvial siltstones and sandstones with minor claystones and conglomerates"

Size class: macrofossils

Collection methods: surface (float),

Primary reference: J. J. Flynn, M. J. Novacek, H. E. Dodson, D. Frassinetti, M. C. McKenna, M. A. Norell, K. E. Sears, C. C. Swisher, III, and A. R. Wyss. 2002. A new fossil mammal assemblage from the southern Chilean Andes: implications for geology, geochronology, and tectonics. Journal of South American Earth Sciences 15(3):285-302 [J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 71843: authorized by John Alroy, entered by John Alroy on 14.05.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Notoungulata - Toxodontidae
Nesodon sp. Owen 1846 notoungulate
Adinotherium sp. Ameghino 1887 notoungulate
 Notoungulata - Homalodotheriidae
Homalodotherium sp. Huxley 1870 notoungulate
 Notoungulata - Hegetotheriidae
Hegetotherium sp. Ameghino 1887 notoungulate
 Notoungulata - Protypotheriidae
Protypotherium sp. Ameghino 1882 notoungulate
 Rodentia - Neoepiblemidae
Perimys perpinguis Ameghino 1891 caviomorph
Perimys impactus Ameghino 1894 caviomorph
Perimys onustus Ameghino 1887 caviomorph
"Perimys scalaris" = Perimys erutus Ameghino 1887 caviomorph
"Perimys procerus" = Perimys erutus Ameghino 1887 caviomorph
 Rodentia - Chinchillidae
Prolagostomus divisus Ameghino 1887 chinchilid
Prolagostomus profluens Ameghino 1887 chinchilid
 Rodentia - Dinomyidae
Scleromys sp. Ameghino 1887 caviomorph
 Rodentia - Dasyproctidae
Neoreomys australis Ameghino 1887 caviomorph
 Rodentia - Eocardiidae
Schistomys erro, "Eocardia perforata" = Eocardia robusta
Schistomys erro Ameghino 1887 caviomorph
"Eocardia perforata" = Eocardia robusta Vucetich 1984 caviomorph
 Rodentia -
Steiromys sp. Ameghino 1887 caviomorph
said to be new
Steiromys duplicatus Ameghino 1887 caviomorph
 Rodentia - Octodontidae
Sciamys principalis Ameghino 1887 caviomorph
 Rodentia -
Spaniomys riparius Ameghino 1887 caviomorph
Stichomys ? sp. Ameghino 1887 caviomorph
Acarechimys sp. Patterson 1965 caviomorph
said to be new
Acarechimys cf. minutus Patterson and Pascual 1967 caviomorph
 Cingulata - Dasypodidae
Proeutatus sp., "Prozaedius sp." = Prozaedyus
Proeutatus sp. Ameghino 1891 armadillo
"Prozaedius sp." = Prozaedyus Ameghino 1891 armadillo
 Xenarthra - Megatheriidae
Hapalops sp. Ameghino 1887 edentate
 Xenarthra - Propalaehoplophoridae
"Propalaeohoplophorus sp." = Propalaehoplophorus
"Propalaeohoplophorus sp." = Propalaehoplophorus Ameghino 1887 edentate
 Ungulata - Macraucheniidae
Theosodon cf. gracilis Ameghino 1891 eutherian
 Ungulata - Proterotheriidae
Proterotherium sp. Ameghino 1883 eutherian
 Ungulata - Astrapotheriidae
Astrapotherium sp. Burmeister 1879 eutherian
 Sparassodonta -
Cladosictis sp. Ameghino 1887 metatherian
 Paucituberculata - Palaeothentidae
Palaeothentes pascuali Bown and Fleagle 1993 marsupial
Palaeothentes intermedius Ameghino 1887 marsupial
Palaeothentes minutus Ameghino 1887 marsupial
Palaeothentes smeti n. sp. Flynn et al. 2002 marsupial