Opisthocoelicaudia
genus of reptiles (fossil)
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.
| Opisthocoelicaudia Temporal range: Late Cretaceous,
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| Skeleton restoration in the Museum of Evolution of Polish Academy of Sciences, Warsaw | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | †Sauropodomorpha |
| Clade: | †Sauropoda |
| Clade: | †Titanosauria |
| Clade: | †Lithostrotia |
| Family: | †Saltasauridae |
| Genus: | †Opisthocoelicaudia Borsuk-Białynicka, 1977 |
| Species: | †O. skarzynskii
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| Binomial name | |
| Opisthocoelicaudia skarzynskii Borsuk-Białynicka, 1977
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Possible synonymy with Nemegtosaurus
changeScientists are arguing whether Nemegtosaurus is a synonym of Opisthocoelicaudia or its own genus.
