Trapa Trapa East mid-upper beds: Santacrucian - Friasian, Chile
collected 2001-2005

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Sparassodonta
Sipalocyon sp. Ameghino 1887
Mammalia - Notoungulata
Typotheria indet. Zittel 1892
? Hegetotherium sp. Ameghino 1887
Mammalia - Notoungulata - Interatheriidae
Mammalia - Rodentia
Luantus sp. Ameghino 1899
Mammalia - Rodentia - Echimyidae
Mammalia - Rodentia
Acarechimys sp. Patterson 1965
see common names

Geography
Country:Chile State/province:Bío Bío
Coordinates: 37.7° South, 71.2° West (view map)
Paleocoordinates:37.0° South, 68.0° West (Wright 2013)
Basis of coordinate:estimated from map
Altitude:1742 meters
Geographic resolution:local area
Time
Period: Neogene Epoch: Miocene
Stage: Burdigalian 10 m.y. bin: Cenozoic 5
Key time interval: Santacrucian - Friasian
Age range of interval: 17.5 - 15.5 m.y. ago
Stratigraphy
Formation:Cura-Mallín
Stratigraphic resolution:group of beds
Stratigraphy comments: The Trapa Trapa East sequence preserves faunas that seem assignable to at least three distinct early–late Miocene SALMAs, from as old as Colhuehuapian or Santacrucian to at least as young as Friasian or Mayoan
Lithology and environment
Primary lithology:volcaniclastic muddy sandstone
Secondary lithology: conglomerate
Includes fossils?Y
Includes fossils?Y
Lithology description: Volcaniclastic sandstone, mudstone and granule conglomerate
Environment:fluvial-lacustrine indet.
Geology comments: 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
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Museum repositories:SGOPV
Collection dates:2001-2005
Metadata
Also known as:Laguna del Laja
Database number:140107
Authorizer:C. Jaramillo Enterer:J. Carrillo
Modifier:M. Kouvari Research group:vertebrate
Created:2013-03-01 15:53:52 Last modified:2025-02-22 15:12:02
Access level:database members Released:2014-03-01 15:53:52
Creative Commons license:CC0
Reference information

Primary reference:
45220. 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]