Itapeuasaurus

Itapeuasaurus (meaning "Itapeua lizard") is a genus of rebbachisaurid sauropod dinosaur from the Alcântara Formation from Maranhão in Brazil. The type and only species is Itapeuasaurus cajapioensis. It would have been around to when fully grown.
Discovery and naming.
In November 2014, fisherman Carlos Wagner Silva discovered a fossilised humerus on the beach at Itapeua. In May 2015, paleontologist Manuel Alfredo Medeiros and his students were sent in and they secured several bones, including limb bones and vertebrae. In 2019, the species was described.
Phylogeny.
Lindoso "et al.", (2019) placed "Itapeuasaurus" in the Nigersaurinae, as the sister taxon to "Demandasaurus".