Opisthocoelicaudia
Opisthocoelicaudia is a genus of titanosaur sauropod dinosaur. It is from Late Cretaceous rocks from Mongolia' s Nemegt Basin. In 1965 a well preserved skeleton was found, missing only a neck and head.
Possible synonymy with Nemegtosaurus
Scientists are arguing whether Nemegtosaurus is a synonym of Opisthocoelicaudia or its own genus, or vice versa.
Titanosaurs
Cretaceous dinosaurs