| Opisthocoelicaudiines Temporal range: Late Cretaceous |
|
|---|---|
| Alamosaurus herd | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Superorder: | Dinosauria |
| Order: | Saurischia |
| Suborder: | †Sauropodomorpha |
| Infraorder: | †Sauropoda |
| Branch: | †Titanosauria |
| Family: | †Saltasauridae |
| Subfamily: | †Opisthocoelicaudiinae McIntosh, 1990 |
| Genera | |
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The Opisthocoelicaudiinae is a clade of titanosaurian dinosaurs from the Late Cretaceous, ranked as a subfamily. Opisthocoelicaudiines are known from China, Mongolia, and the United States (New Mexico, Texas, and Utah).[1] Three genera have been assigned to Opisthocoelicaudiinae: Alamosaurus, Borealosaurus, and Opisthocoelicaudia (the type genus).[3] It was named by John S. McIntosh in 1990.[1] The hands of opisthocoelicaudiines lacked wrist bones and phalanges.[4]