Cerro los Pinos (Miocene of Chile)

Also known as Laguna del Laja

Where: Bío Bío, Chile (37.5° S, 71.2° W: paleocoordinates 38.1° S, 67.0° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Cura-Mallín Formation, Langhian (16.0 - 13.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; volcaniclastic, sandy mudstone and volcaniclastic, conglomeratic sandstone

• Our analyses indicate that the exposed thickness of the Cura-Mallin Fm southeast of Laguna del Laja exceeds 1800 m, consisting of interbedded predominantly-fluviatile volcaniclastics with minor facies

•possibly indicative of short-lived lacustrine phases

• Volcaniclastic mudstone and sandstone

•Pebble conglomerate and trough cross-bedded volcaniclastic sandstone

Size class: macrofossils

Collected in 2001-2005; reposited in the SGOPV

Primary reference: J. J. Flynn, R. Charrier, D. A. Croft, P.B. Gans, T. M. Herriott, J. A. Wertheim, and A. R. Wyss. 2008. Chronologic implications of new Miocene mammals from the Cura-Mallín and Trapa Trapa formations, Laguna del Laja area, south Central Chile. Journal of South American Earth Sciences 26:412-426 [C. Jaramillo/J. Carrillo]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 140091: authorized by Carlos Jaramillo, entered by Juan Carrillo on 01.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Notoungulata -
Typotheria indet.
Typotheria indet. Zittel 1892 notoungulate
 Rodentia -
Caviomorpha indet.
Caviomorpha indet. Wood and Patterson 1955 caviomorph
 Rodentia - Chinchillidae
Prolagostomus sp.
Prolagostomus sp. Ameghino 1887 chinchilid
 Rodentia - Dasyproctidae
Dasyproctidae (aff. Alloiomys) sp.
 Rodentia - Echimyidae
Heteropsomyinae (aff. Acarechimys) sp.
 Cingulata - Dasypodidae
Dasypodidae indet.
Dasypodidae indet. Gray 1821 armadillo