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Recent foraminifera in the Loa river area 21 25S; 70 04W, Chile Foraminiferos recientes en el area del Rio Loa 21 25S; 70 04W, Chile


Recent foraminifera in the Loa river area 21 25S; 70 04W, Chile Foraminiferos recientes en el area del Rio Loa 21 25S; 70 04W, Chile



Estudios Oceanologicos 20: 3-11



Six marine sediments samples were obtained from a transitional oceanographic area located at 21deg. 20 minute S and 21deg. 25 minute S in front of the Loa zone, and were taken at 10 to 86 m depth. The samples were used for qualitative characterization of foraminifera fauna. The sediments were analized by the method described by BOLTOVSKOY (1965). A total of 39 species (34 benthonic and 5 planktonic species) were identified. Dominant species were Bolivina costata Orbigny, 1839, Cibicides aknerianus (Orbigny, 1846), C. depressus (Orbigny, 1839), Cribrorotalia meridionalis (Cushman & Kellett, 1929), Discorbis floridanus (Cushman, 1922), and D. peruvianus (Orbigny, 1839). Following the presence and distribution of the identified benthic foraminifera fauna based on ZAPATA & MOYANO (1997) and ZAPATA (1999) studies, the analized area can be classified as Chilean foraminiferological zoogeographic subprovince.

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