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A new giant titanosaur sheds light on body mass evolution among sauropod dinosaurs
A new giant titanosaur is described, which represents the largest species described so far and one of the most complete titanosaurs, and its inclusion in an extended phylogenetic analysis and the optimization of body mass reveals the presence of an endemic clade of giant titanosaurs inhabited Patagonia between the Albian and the Santonian. Expand
New Age Constraints for the Salamanca Formation and Lower Río Chico Group in the Western San Jorge Basin, Patagonia, Argentina: Implications for Cretaceous-Paleogene Extinction Recovery and Land
The Salamanca Formation of the San Jorge Basin (Patagonia, Argentina) preserves critical records of Southern Hemisphere Paleocene biotas, but its age remains poorly resolved, with estimates rangingExpand
New age constraints for early Paleogene strata of central Patagonia, Argentina: Implications for the timing of South American Land Mammal Ages
The Rio Chico Group in the San Jorge Basin of central Patagonia (Argentina) preserves some of South America’s most significant Paleogene records of biotic and climatic change. Three of itsExpand
Lateritized tephric palaeosols from Central Patagonia, Argentina: a southern high-latitude archive of Palaeogene global greenhouse conditions
Palaeosols of the Koluel-Kaike Formation, a red colour-banded, pyroclastic succession from southern Argentina, constitute a proxy for Eocene climate changes. Reticulated and vertically elongatedExpand
Onset of the Middle Eocene global cooling and expansion of open-vegetation habitats in central Patagonia
Climate-driven changes in terrestrial environments and biomes after the Early Eocene Climatic Optimum are poorly documented from southern continents. Particularly, Middle Eocene-Early Oligocene leafExpand
The Phanerozoic Four Revolutions and Evolution of Paleosol Ichnofacies
The analysis of a database composed of 166 cases of invertebrate and root trace fossils in paleosols allowed us to recognize four major evolutionary steps in the Phanerozoic evolution of paleosolExpand
Aptian–Albian Cupressaceae (sensu stricto) woods from Cañadón Asfalto Basin, Patagonia Argentina
Abstract This paper describes the first macrofloristic record from Los Adobes Formation (Chubut Group) in Canadon Asfalto Basin (Patagonia, Chubut Province, Argentina). The studied fossils wereExpand
Hemispherical pan or dish-shaped trace fossils from the Cenozoic of the Central Patagonia are attributed to the burrowing action of cicadas. A new ichnotaxon, Feoich- nus challa igen. et isp. nov. isExpand
Controls on clay minerals assemblages in an early paleogene nonmarine succession: Implications for the volcanic and paleoclimatic record of extra-andean patagonia, Argentina
Abstract The distribution of the clay minerals of the Banco Negro Inferior-Rio Chico Group succession (BNI-RC), a middle Danian–middle Eocene mainly continental epiclastic–pyroclastic successionExpand
Rhizolith balls from the Lower Cretaceous of Patagonia: Just roots or the oldest evidence of insect agriculture?
A new type of trace fossil from the Lower Cretaceous of Patagonia that may record the oldest evidence of insect agriculture is represented by biconvex, sub-spherical, carbonate balls composed of a dense mass of rhizoliths, which partially resemble the nests and behaviour of the African termite Sphaerothermes sphaerothorax. Expand