Letrero Formation

Last updated
Letrero Formation
Stratigraphic range: Late Miocene
(Mayoan-Montehermosan)
~11.6–5.3  Ma
Type Geological formation
Lithology
Primary Siltstone
Other Sandstone
Location
Coordinates 3°18′S79°06′W / 3.3°S 79.1°W / -3.3; -79.1
Approximate paleocoordinates 3°42′S77°24′W / 3.7°S 77.4°W / -3.7; -77.4
Region Azuay Province
Country Ecuador
Extent Sierra Region
Equador physical map.svg
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Letrero Formation (Ecuador)

The Letrero Formation is a Late Miocene (Mayoan to Montehermosan in the SALMA classification) geologic formation in south-central Ecuador. The formation comprises lacustrine sediments with strong fluvial clastic input and contains siltstones and fine-grained sandstones. [1]

Contents

Fossil content

The formation has provided fossils of:

See also

References

  1. RHM Locality 4 at Fossilworks.org
  2. Carlini et al., 2014

Bibliography