Hypacrosaurus
Extinct genus of reptiles / From Wikipedia, the free encyclopedia
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Hypacrosaurus (meaning "near the highest lizard" [Greek υπο-, hypo- = less + ακρος, akros, high], because it was almost but not quite as large as Tyrannosaurus)[1][2] was a genus of duckbill dinosaur similar in appearance to Corythosaurus. Like Corythosaurus, it had a tall, hollow rounded crest, although not as large and straight. It is known from the remains of two species that spanned 75 to 67 million years ago,[3] in the Late Cretaceous of Alberta, Canada, and Montana, United States, and is the latest hollow-crested duckbill known from good remains in North America. It was an obscure genus until the discovery in the 1990s of nests, eggs, and hatchlings belonging to H. stebingeri.
Hypacrosaurus | |
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H. altispinus fossil at the Royal Tyrrell Museum | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | †Ornithischia |
Clade: | †Ornithopoda |
Family: | †Hadrosauridae |
Subfamily: | †Lambeosaurinae |
Tribe: | †Lambeosaurini |
Genus: | †Hypacrosaurus Brown, 1913 |
Type species | |
†Hypacrosaurus altispinus Brown, 1913 | |
Other species | |
Synonyms | |
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