What is Opisthocoelicaudia?
{{speciesbox | fossil_range = [[Late Cretaceous]], {{Fossil range|70}} | image = Opisthocoelicaudia_Museum_of_Evolution_in_Warsaw_02.JPG | image_upright = 1.1 | image_caption = Skeleton restoration in the [[Museum of Evolution of Polish Academy of Sciences]], [[Warsaw]] | genus = Opisthocoelicaudia | parent_authority = [[Maria Magdalena Borsuk-Białynicka|Borsuk-Białynicka]], [[1977 in paleontology|1977]] | species = skarzynskii | authority = Borsuk-Białynicka, 1977 }} '''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]]. [[File:Opisthocoelicaudia.jpg|thumb|left|250px|Restoration of ''Opisthocoelicaudia'']] {{biology-stub}} [[Category:Titanosaurs]] [[Category:Cretaceous dinosaurs]]