of Southern dinosaurs that included' Abelisaurus comahuensis (1985) Agustinia ligabuei (1998) Alvarezsaurus calvoi (1991) Amargasaurus cazaui (1991) Andesaurus delgadoi (1991) Argentinosaurus huinculensis (1993) Argyrosaurus superbus (1984) Carnotaurus sastrei (1985), Coloradisaurus brevis (1978) Guaibasaurus candelariensis (1998) Kritosaurus australis (1984) Lapparentosaurus madagascariensis (1986), Ligabueino andesi (1996), Mussaurus patagonicus (1979) Noasaurus leali (1980) Piatnitzkysaurus floresi (1979) Rayososaurus agrioensis (1996) Riojasaurus incertus (1969) Saltasaurus loricatus (1980) Velocisaurus unicus (1991) Volkheimeria chubutensis (1979) Ligabuesaurus leanzai (2006) He also contributed to the discovery of the Gigantosaurus. Philosophy Bonaparte was for a long time a traditionalist and did not use modern cladistic methods, which apply the principle of parsimony to a vast array of synapomorphies. Partly for this reason, he declined to work on the modern treatise The Dinosauria, published in 1990. However, in 2000 Bonaparte began to use cladograms. For instance, his studies of sauropods (e.g., Ligabuesaurus) and proto-mammals from Brazil show cladograms made by himself and co-authors. While he is best known for his dinosaur discoveries, he preferred to study the fossils of mammals. His students included Rodolfo Coria, Luis Chiappe, Fernando Novas, Jaime Powell, Guillermo W. Rougier, Leonardo Salgado, Jorge Calvo, Sebastián Apesteguía and Agustín Martinelli. References External links Argentine paleontologists Argentine people of Italian descent 1928 births 2020 deaths People from Rosario, Santa Fe National University of Tucumán faculty