Arrudatitan

Arrudatitan (meaning "Arruda's giant") is an extinct genus of titanosaur sauropod dinosaur known from the Late Cretaceous (Campanian-Maastrichtian)-aged Adamantina Formation of Brazil. The type species, A. maximus, was named and described in 2011 as a species of Aeolosaurus, but was separated into its own genus in 2021. It was relatively gracile for a titanosaur.

==Discovery and naming== The holotype, MPMA 12-0001-97, which includes two partial posterior cervicals, fragments of several dorsals, parts of nine caudals, seven partial cervical ribs, twelve partial dorsal ribs, eight chevrons, a fragmentary scapula and arm bones, the left and partial right femur, the left ischium, and fragments; with other specimens known, such as the isolated middle caudal vertebra MPP 248, was discovered in 1997 by Ademir Frare and his 12-year-old nephew Luiz Augusto dos Santos Frare in a field in Cândido Rodrigues. They notified palaeontologist Antônio Celso de Arruda Campos and the holotype was collected between 1997 and 1998 by staff of the Museu de Paleontologia de Monte Alto and it was first mentioned in scientific literature by Santucci and Bertini (2001). They noted that crocodylomorph and theropod teeth were found near the holotype, but no bite marks were present. In 2009, Fernando Novas briefly noted on the holotype, noting its size.