Opisthocoelicaudiinae

Opisthocoelicaudiines Temporal range: Late Cretaceous PreЄ Є O S D C P T J K Pg N
Alamosaurus herd
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Dinosauria
Order:	Saurischia
Suborder:	†Sauropodomorpha
Clade:	†Neosauropoda
Clade:	†Macronaria
Clade:	†Titanosauria
Family:	†Saltasauridae
Subfamily:	†Opisthocoelicaudiinae McIntosh, 1990
Genera
†Alamosaurus Gilmore, 1922 †Borealosaurus You et al. 2004 †Opisthocoelicaudia (type) Borsuk-Białynicka, 1977

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). Three genera have been assigned to Opisthocoelicaudiinae: Alamosaurus, Borealosaurus, and Opisthocoelicaudia (the type genus). It was named by John S. McIntosh in 1990. The hands of opisthocoelicaudiines lacked wrist bones and phalanges.