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Letrero Formation

The Letrero Formation is a Late Miocene geologic formation in south-central Ecuador. The formation comprises lacustrine sediments with strong fluvial clastic input and contains siltstones and fine-grained sandstones.

Fossil content
The formation has provided fossils of: • Anadasypus aequatorianusCaviomorpha indet.Litopterna indet.Nabondasypus maddeniToxodontia indet. == See also ==
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