Orthomerus

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Orthomerus
Fossil range: Cretaceous
Conservation status
Extinct (fossil)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Superorder: Dinosauria
Order: Ornithischia
Suborder: Ornithopoda
Infraorder: Iguanodontia
Superfamily: Hadrosauroidea
Family: Hadrosauridae
Genus: Telmatosaurus
Species: O. dolloi
Binomial name
Orthomerus dolloi
Seeley, 1883

Orthomerus (meaning "straight femur") is the name given to a genus of dinosaur from the Cretaceous. It was a hadrosaur which lived in Europe. The shaft of the femur is remarkably straight and strong. The type species, Orthomerus dolloi, was described by Seeley in 1883. A second species, O. weberae, was first described by Riabinin in 1945. O. transsylvanicus has since been reclassified as a species of Telmatosaurus.

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