(Bonaparte’s titan - named after José Fernando Bonaparte).
Named By: A. Martinelli & A. M. Forasiepi - 2004.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Sauropoda, Titanosaira, Saltasauridae.
Species: B. reigi (type).
Size: Uncertain due to lack of remains, but is noted as being of a small size.
Known locations: Argentina, Rio Negro Province - Allen Formation.
Time period: Campanian-Maastrichtian of the Cretaceous.
Fossil representation: Brain case and partial post cranial remains. Fossil remains of two individuals are known.
Named after the famous palaeontologist José Fernando Bonaparte for his contributions to the advancement of palaeontology, Bonatitan seems to have actually been quite a small titanosaur. Hailing from the Allen Formation, Bonatitan likely shared its habitat with other dinosaurs such as other titanosaurs like Saltasaurus, Laplatasaurus, Aeolosaurus and Rocasaurus and the hadrosaurs Lapampasaurus and Willinakaqe. Predatory threats may have come from theropod dinosaurs such as Austroraptor. Large numbers of fish and turtle fossils are also known indicating the presence of a lot of water in the ecosystem of Bonatitian while the pterosaur Aerotitan is also known to have been present.
- Late Cretaceous vertebrates from Bajo de Santa Rosa (Allen Formation), Rio Negro province, Argentina, with the description of a new sauropod dinosaur (Titanosauridae). - Revista del Museo Argentino de Ciencias Naturales 6(2): 257-305. - A. Martinelli & A. M. Forasiepi - 2004.
- Redescription of Bonatitan reigi (Sauropoda: Titanosauria), from the Campanian–Maastrichtian of the Río Negro Province (Argentina). - Historical Biology: An International Journal of Paleobiology 27(5): 525-548. - L. Salgado, P.A. Gallina & A. Paulina Carabajal - 2014.