Alamosaurus
Alamosaurus (; meaning "Ojo Alamo lizard") is a genus of titanosaurian sauropod dinosaurs, containing a single known species, Alamosaurus sanjuanensis, from the late Cretaceous Period of what is now southern North America. Isolated vertebrae and limb bones indicate that it reached sizes comparable to "Argentinosaurus" and "Puertasaurus", which would make it the largest dinosaur known from North America. Its fossils have been recovered from a variety of rock formations spanning the Maastrichtian age of the late Cretaceous period. Specimens of a juvenile "Alamosaurus sanjuanensis" have been recovered from only a few meters below the Cretaceous-Paleogene boundary in Texas, making it among the last surviving non-avian dinosaur species.
Rodolfo Coria
He is best known for having directed the field study and co-naming of "Argentinosaurus" (possibly the world's largest land animal ever) in 1993, and "Giganotosaurus" (one of the largest known terrestrial carnivores), in 1996 among other landmark South American dinosaurs. He is a member of the Argentine Paleontological Association, Society of Vertebrate Paleontology, Paleontological Society and The Explorers Club.