biome Argentina 10 grassland 8 Aves 6 Brazil 6 Gondwana 6 Patagonia 6 biodiversity 6 bird 6 environmental conditions 6 plantation 6 species richness 6 Animals 4 Aptian 4 Article 4 Atlantic Forest 4 Baqueró Group 4 Formicidae 4 Magnoliophyta 4 Palynology 4 South America 4 age determination 4 animal 4 coniferous tree 4 geographical distribution 4 land use 4 new species 4 nonhuman 4 paleobotany 4 palynology 4