Jose Bonaparte

See also: Bonaparte (homonymy)

Jose Fernando Bonaparte is a Argentinian Paléontologue born on June 14th, 1928. He discovered a great number of South American Dinosaures and was used as mentor with a new generation of paleontologists like Rodolfo Coria. According to the paleontologist Peter Dodson of the University of Pennsylvania, “almost with him only, it succeeds in making of Argentina the 6th country of the world in term of dinosaurs”.

Biography

Bonaparte is the son of an Italian sailor. It was born with Rosario (Argentine) and grew with Mercedes (Buenos Aires). In spite of a lack of training in the field, it started to collect Fossiles as of its more young age, and created even a museum in its city. Later, it became Curateur of the National university of Tucumán where it was named Doctor Honoris Causa in 1974. At the end of the years 1970, he became scientist of the most rank ( senior scientist ) to the National museum of natural science of Buenos Aires.

The discoverer

Natural diversity of South America

Supercontinent of the Pangée separated in Laurasia in north and Gondwana in the south during the Jurassic . During the Cretaceous, the South America moved away from the remainder of Gondwana. This division caused a difference in evolution between the biotopes of north and the south, and the animals of the south passed for very strange to those which were accustomed to fauna more in north. Bonaparte discovered facts corroborating this division, with the result that the paleontologist Robert Bakker called it “Main Mesozoic ”.

In South America, the titanosaures developed armours and were flourishing, while the Sauropode S of the northern continent disappeared and were replaced by vast herds of hardrosaures   ; the Théropode S carnivores were represented by abelisaures and strange dinosaurs like the horned Carnotaurus , with short members and a crushed nose. Indications make it possible to think that a passage united North America and of the South at the end of the Crétacé   ; indeed titanosaures were discovered in north until in Utah and of the Ornithorynque S in the south until in Patagonie.

List discoveries

  • Abelisaurus comahuensis (1985, with Novas), Carnivorous Théropode, like the Allosaurus .

  • Agustinia ligabuei (1998, in the past Augustia ), Sauropode like the Brachiosaurus with plates spinales like the Stegosaurus
  • Alvarezsaurus calvoi (1991), the first and the most primitive member of the dinosaurs to the avian characters Alvarezsauridea .
  • Amargasaurus cazaui (1991, avecSalgado), Diplodocidé like the Diplodocus , with spines (and a sail?) along the back.
  • Andesaurus delgadoi (1991, with Calvo), Titanosauridé and one of the largest dinosaurs.
  • Argentinosaurus huinculensis (1993, with Coria), Titanosauridé and the largest known dinosaur.
  • Argyrosaurus superbus (1984), Titanosauridé and one of the largest dinosaurs.
  • Carnotaurus sastrei (1985), ceratosaurien carnivorous with head of bull.
  • Coloradisaurus brevis (1978, in the past Coloradia ), Sauropodomorphe of the beginning of the Sorted.
  • Guaibasaurus candelariensis (1998, with Ferigolo), théropode primitive.
  • Kritosaurus australis (1984, with Frenchi, Powell and Sepúlveda), most known of the hardrosaures southern American.
  • Lapparentosaurus madagascariensis (1986), Sauropode.
  • Ligabueino andesi (1996), small ceratosaurien .
  • Mussaurus patagonicus (1979, with Vince), sauropodomorphe of the beginning of Sorted only known by its eggs and of very small craniums of babies.
  • Noasaurus leali (1980, with Powell), cératosaurien which one thinks that it had a claw like the Deinonychus (but this claw belonging to the hand).
  • Patagopteryx (1992) - most primitive in the world of the true birds unable to steal
  • Piatnitzkysaurus floresi (1979), théropode tetanurae .
  • Pterodaustro (1970), Ptérosaure.
  • Rayososaurus agrioensis (1996), sauropode Rebbachisauridae .
  • Riojasaurus incertus (1969), sauropodomorphe of the beginning of the Sorted.
  • Saltasaurus loricatus (1980, with Powell), titanosauridé with self-color design.
  • Velocisaurus unicus (1991), ceratosaurien built for speed.
  • Volkheimeria chubutensis (1979), a sauropode.

Bonaparte also discovered or described a big number of archosaures and birds primitive (like Iberomesornis ), and took part in l" study of other dinosaurs like the Giganotosaurus carolinii .

Its philosophy

Bonaparte is a traditionalist and does not use the modern method Cladistique, which Partly applies the principle of Parcimonie to a vast field of Synapomorphie S. for this reason, it declined which was quoted to him to work on a new treaty: The Dinosauria . Although much more known for its discoveries on the dinosaurs, it prefers the study of the Mammifère S. It is known as steady worker, been obstinated, with a strong personality

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