Where: Santa Cruz, Argentina (49.0° S, 72.0° W: paleocoordinates 52.4° S, 41.0° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Kachaike Formation, Aptian to Aptian (125.0 - 100.5 Ma)
• It is therefore considered important, complete the taxonomic study of this paleoflora to assign to this location (ACM) narrower age.
Environment/lithology: delta plain; lithified, sandy sandstone and lithified shale
•-Rebasa, M. 1982. [ Análisis estratigráfico y paleoambiental de la Formación Kachaike, aflorante en la barranca epónima, provincia de Santa Cruz. Tesis de Licenciatura. Facultad de Ciencias Exactas y Naturales, UBA. 60 pp. Inédito.]
•-Gamerro, J.C. 1982. [Informe palinológico del perfil arroyo Caballo Muerto, Santa Cruz. Yacimientos Petrolíferos Fiscales, Buenos Aires (inédito)].
Size class: microfossils
• Spores smooth-psilate and cingulate and pollen grains.
Preservation: soft parts, original sporopollenin
Collection methods: The materials of spores and pollen grains are storted at the Palynological Collection Paleobotany Division of the Argentine Museum of Natural Sciences "B. Rivadavia" (BA Pb Pal.). The material of spores and pollen grains studied was originally contributed by Fiscal Oilfields (Gamerro, J.C. 1982. [Informe palinológico del perfil arroyo Caballo Muerto, Santa Cruz. Yacimientos Petrolíferos Fiscales, Buenos Aires (inédito)]).
Primary reference: A. Archangelsky and M. Llorens. 2003. Palinología de la Formación kachaike, Cretácico Inferior de la Cuenca Austral, provincia de Santa Cruz. I-Esporas lisas y cinguladas. Ameghiniana 40(1):71-80 [C. Jaramillo/J. Moreno/J. Moreno]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 150615: authorized by Carlos Jaramillo, entered by Jessica Moreno on 12.09.2013
Creative Commons license: CC BY (attribution)
Taxonomic list