What is "marisaurus"

Marisaurus (meaning "Mari lizard", for the Mari tribe of Pakistan) is a genus of titanosaurian sauropod from the Late Cretaceous of Balochistan, western Pakistan. The type species is M. jeffi, described by M. Sadiq Malkani in 2006, and it is based on tail vertebrae, found in the Maastrichtian-age Vitakri Member of the Pab Formation. Much additional material, including a partial skull, many vertebrae, and a few hindlimb bones, has been assigned to it.