Base of Arroyo Guamini (Neogene of Argentina)

Also known as Guaminí

Where: Buenos Aires, Argentina (37.0° S, 62.5° W: paleocoordinates 37.2° S, 60.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Epecuen Formation, Huayquerian (8.0 - 5.0 Ma)

• Sobre la inconveniencia del uso del término "Formación" para los niveles referidos, véase Zetti (1967: 170) y Pascual el al. (1966: 6).

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collected by R. Pascual, F. Hidalgo, P. Zucchi in 1966; reposited in the MLP

Primary reference: F. Goin. 1997. Thylamys zettii, nueva especie de marmosino (Marsupialia, Didelphidae) del Cenozoico tardio de la region pampeana. Ameghiniana 34(4):481-484 [E. Vlachos/E. Vlachos]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 211640: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 24.07.2020, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
  - Mylodontidae
Proscelidodon gracillimus Rovereto 1914 edentate
MLP 66-XII-13-5
 Didelphimorphia - Didelphidae
Thylamys zettii n. sp. Goin 1997 fat-tailed mouse opossum
MLP 66-XII-13-3, left mandible