Maxakalisaurus

Maxakalisaurus is the name given in August 2006 to the fossils of a titanosaurid dinosaur genus, found in Brazil, 45 Km near the city of Prata, in the state of Minas Gerais in 1998. It was closely related to Saltasaurus, a sauropod considered unusual because it had evolved apparently defensive traits, including bony plates on its skin and vertical plates along its spine; such osteoderms have also been found for Maxakalisaurus.

The genus name is derived from the tribe of the Maxakali; Topa is one of their divinities.

The Maxakalisaurus fossil was about 13 meters (43.3 feet) long, with an estimated weight of 9 tons, although, according to paleontologist Alexander Kellner, it could reach a length of approximately 20 meters (65 feet). It had a long neck and tail, ridged teeth (unusual among sauropods) and lived about 80 million years ago. Because sauropods seem to have lacked significant competition in South America, they evolved there with greater diversity and more unusual traits than elsewhere in the world.

"This is the biggest dinosaur yet described in Brazil," said Alexander Kellner, lead author of the scientific description. "We have found the bones of what appear to be larger dinosaurs, but we still haven't been able to put them together for scientific descriptions."