Nemegtosauridae

Nemegtosauridae is a family of probably titanosaurian sauropod dinosaurs based originally on two late Cretaceous Mongolian species known only from their diplodocid-like skulls: Nemegtosaurus and Quaesitosaurus. Authorities disagree as to the relationship of these two genera with other sauropods, and indeed whether they even constitute a valid family. More recently, additional sauropods have been added to this group, and cladistic methodology has been used to shed further light on the evolutionary relationships of these animals.