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The late Oligocene flora from the Río Leona Formation, Argentinian Patagonia

Author:
Césari, Silvia N., Panti, Carolina, Pujana, Roberto R., Francis, Jane E., Marenssi, Sergio A.
Source:
Review of palaeobotany and palynology 2015 v.216 pp. 143-158
ISSN:
0034-6667
Subject:
Anacardiaceae, Fabales, Lauraceae, Myrtaceae, Nothofagaceae, Oligocene epoch, Proteaceae, Rosaceae, Typhaceae, conifers, ferns and fern allies, flora, leaves, radiometry, seeds, Argentina
Abstract:
A late Oligocene plant macrofossil assemblage is described from the Río Leona Formation, Argentinian Patagonia. This includes a fern, “Blechnum” turbioense Frenguelli, one species of conifer, and sixteen angiosperm taxa. Rosaceae, Myrtaceae, Proteaceae, Lauraceae, Anacardiaceae and Typhaceae are represented by one species in each family. Five species are considered to be members of the Fabales. Three leaf taxa together with Carpolithus seeds are placed in the Nothofagaceae. Palynomorphs and permineralized woods complete the floral record of the Río Leona Formation, which is considered early late Oligocene based on radiometric dating and palynofloras.
Agid:
6024628