Named By: Leonardo Salgado and Claudia Azpilicueta - 2000.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Sauropomorpha, Sauropoda.
Species: R. muniozi (type).
Size: About 8 meters long, possibly larger.
Known locations: Argentina, Rio Negro Province - Allen Formation.
Time period: Campanian of the Cretaceous.
Fossil representation: Partial post cranial remains including vertebrae, pubis, ischium and left femur, possibly of a juvenile.
eight meters long Rocasaurus was actually quite
small for a sauropod,
though it still would have been one of the larger dinosaurs on the
landscapes of late Cretaceous Argentina. However if the holotype is
correctly interpreted as that of a juvenile, then adults of the genus
would have certainly grown larger.
Another sauropod from the Allen Formation is Saltasaurus, a genus that Rocasaurus may have come into contact with while pterosaurs like Aerotitan flew overhead.
- Un nuevo saltasaurino (Sauropoda, Titanosauridae) de la provincia de Río Negro (Formación Allen, Cretácico Superior), Patagonia, Argentina [A new saltasaurine (Sauropoda, Titanosauridae) from Río Negro province (Allen Formation, Upper Cretaceous), Patagonia, Argentina, Leonardo Salgado and Claudia Azpilicueta - 2000.