Myloplus sauron Alta Floresta titi monkey Myloplus Munduruku marmoset Emilia's marmoset Cruz Lima's saddle-back tamarin Cichla orinocensis Myloplus nigrolineatus Chestnut capuchin Paleosuchus Milton's titi monkey Boto Black arowana List of primates described in the 2020s Allobates sumtuosus Inia Satanoperca Parecis titi monkey Bolivian river dolphin Tometes Uakari Serrasalmidae List of primates described in the 2010s Eastern pygmy marmoset Satanoperca lilith Araguaian river dolphin Schneider's marmoset Arapaiminae Iniidae Caiman (genus) Smooth-fronted caiman Broad-snouted caiman Rio Mayo titi monkey Alexandre Rodrigues Ferreira Wedge-capped capuchin Cichla temensis Alligatoridae Western pyg…

gmy marmoset Yacare caiman Amazon river dolphin Black caiman Cuvier's dwarf caiman Peacock bass Spectacled caiman Shapeshifting List of things named after J. R. R. Tolkien and his works Ganges Neblina uakari Aracá uakari List of mammals described in the 21st century