Also known as Estratos de San Lucas
Where: Salta, Argentina (25.8° S, 65.5° W: paleocoordinates 26.0° S, 63.7° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Palo Pintado Formation, Huayquerian to Huayquerian (9.0 - 6.8 Ma)
• formation-level stratigraphic resolution
Environment/lithology: fluvial; lithology not reported
• Megasequence III, or Araucanense is composed in the CalchaquõÂ Valley of a coarsening and thickening upward cycle, up to 3 km thick, which overlies the Angastaco Formation conglomerates in Megasequence II through a rapid transition zone. Lithology grades from lacustrine and ®ne-grained ¯uvial facies at its base (Palo Pintado Formation), to more proximal ¯uvial and conglomeratic alluvial facies at the top (lower part of the San Felipe Formation), mostly in grayish, yellowish, and greenish strata.
Size classes: macrofossils, mesofossils
Primary reference: D. Starck and L. M. Anzotegui. 2001. The late Miocene climatic change - persistence of a climatic signal through the orogenic stratigraphic record in northwestern Argentina. Journal of South American Earth Sciences 14:763-774 [P. Mannion/M. Kouvari]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 206042: authorized by Philip Mannion, entered by Miranta Kouvari on 29.10.2019
Creative Commons license: CC BY (attribution)
• Palinomorphs were not included in the taxonomic list.
•The existence of an important fossil content in the Palo
•Pintado Formation and in the basal section of the San Felipe Formation was known for long time. Russo (1948) mentioned mammal remains belonging to Pleurolestodon avitus, undeterminable plants, and bivalves (Diplodon and Corbicula). Vilela (1954) described from the `Estratos de San Lucas' (equivalent to the Palo Pintado Formation) plant remains (logs and leaves) and the freshwater mollusca Ampularia, Corbicula stelzneri, and Diplodon.
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