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Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Ornithischia
Clade: Ornithopoda
Clade: Ankylopollexia
Clade: Styracosterna
Genus: Lanzhousaurus
You, Ji & Li, 2005
Species: † L. magnidens
Binomial name
Lanzhousaurus magnidens
You, Ji & Li, 2005

Lanzhousaurus is a genus of dinosaur. Lanzhousaurus lived in the Gansu region of what is now China during the Early Cretaceous. A partial skeleton has been recovered. It was described by You, Ji and Li in 2005 and the type species is Lanzhousaurus magnidens.


It is perhaps most notable for its "astonishingly huge teeth", among the largest for any herbivorous creature ever, which indicate it is a styracosternan iguanodont. The mandible, longer than one meter, suggests very large size for the animal.