Opisthocoelicaudiinae

Eugnathostomata

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
Superorder:	Dinosauria
Order:	Saurischia
Suborder:	†Sauropodomorpha
Infraorder:	†Sauropoda
Branch:	†Titanosauria
Family:	†Saltasauridae
Subfamily:	†Opisthocoelicaudiinae McIntosh, 1990
Genera
†Alamosaurus Gilmore, 1922 †Borealosaurus You et al. 2004[1][2] †Opisthocoelicaudia (type) Borsuk-Białynicka, 1977[1]

Opisthocoelicaudia skeleton restoration in Poland.

Two Alamosaurus sanjuanensis.

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]

References

1. ^ ^{a b c d} The Paleobiology Database: Opisthocoelicaudiinae
2. ^ The Paleobiology Database: Borealosaurus
3. ^ González Riga, Bernardo J.; Previtera, Elena; and Pirrone, Cecilia A. (2009). "Malarguesaurus florenciae gen. et sp. nov., a new titanosauriform (Dinosauria, Sauropoda) from the Upper Cretaceous of Mendoza, Argentina". Cretaceous Research 30 (1): 135–148. doi:10.1016/j.cretres.2008.06.006. 
4. ^ Tidwell, Virginia; Carpenter, Kenneth (2005). Thunder-Lizards: The Sauropodomorph Dinosaurs. Bloomington, Indiana: Indiana University Press. p. 339. ISBN 0-253-34542-1. http://books.google.com/books?id=bMnKDusJuYUC&pg=PA338&lpg=PA338&dq=Opisthocoelicaudinae&source=bl&ots=0Xr37-hUDC&sig=XVfkDfRz4ZJouAhuwnLXrg9j7fo&hl=en&ei=I8O7S_6NPI_gnAfs8PS5CA&sa=X&oi=book_result&ct=result&resnum=5&ved=0CBcQ6AEwBA#v=onepage&q=Opisthocoelicaudinae&f=false. Retrieved April 6, 2010. 

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