Where: Santa Cruz, Argentina (49.1° S, 72.1° W: paleocoordinates 50.9° S, 39.2° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Kachaike Formation, Aptian to Aptian (125.0 - 109.0 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: delta plain; lithified, black, argillaceous shale and lithified, sandy sandstone
•deposits. In the middle levels, sandstone becomes more abundant (in both grain size and thickness), and four sedimentary cycles are recognized, each composed of dark laminated shales representing deep facies, and fine sandstones representing shoreface facies.
Size class: microfossils
• Other: Palynomorphs
Preservation: soft parts, original sporopollenin
Reposited in the MACN
Collection methods: bulk, chemical, hydrochloric, hydroflouric,
Primary reference: V. Perez Loinaze, S. Archangelsky, and G. Cladera. 2011. Palynostratigraphic study of the Early Cretaceous Río Mayer and Kachaike formations at the Quebrada El Moro Section, Austral Basin, southwestern Argentina. Cretaceous Research (34)161-171 [C. Jaramillo/P. Santamarina/P. Santamarina]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 149850: authorized by Carlos Jaramillo, entered by Patricio Santamarina on 28.08.2013
Creative Commons license: CC BY (attribution)
Taxonomic list