Named By: Rodrigo Santucci and Reinaldo Bertini - 2006.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Sauropoda, Titanosauria.
Species: A. mezzalirai (type).
Size: Unknown due to lack of remains.
Known locations: Brazil - Adamantina Formation.
Time period: Turonian to Maastricthian of the Cretaceous.
Fossil representation: Six caudal (tail) vertebrae.
of Brazilian dinosaurs are often noted as being incomplete (for
example, the increasingly famous spinosaurid
was named from
only the tip of the snout), and Adamantisaurus
was no exception to
this since it was named from only six caudal vertebrae. These six
vertebrae were originally written about in 1959 by Sergio
Mezzalira, but were not formally named as a genus until 2006. The
genus name is in reference to the Admantina Formation where the
holotype remains were discovered, while the type species name is in
honour of Sergio Mezzalira.
Because it is only named from caudal vertebrae it is impossible to establish a size for Adamantisaurus as well as identify other features such as the presence of bony armour called scutes in the skin which are seen in at least some titanosaurs. Despite this, Adamantisaurus has been considered to possibly be similar to genera such as Aeolosaurus and Trigonosaurus. Other sauropods from the Admantina Formation that Adamantisaurus may have lived alongside include Antarctosaurus, Gondwanatitan and Maxakalisaurus.
On a side note, care should be taken not to confuse the sauropod genus Adamantisaurus with the crocodylomorph Adamantinasuchus, which is also known from the same formation.
- A new titanosaur from western São Paulo State, Upper Cretaceous Bauru Group, south-east Brazil - Rodrigo Santucci and Reinaldo Bertini - 2006.