Saurolophus

Saurolophus; Temporal range: Upper Cretaceous
Conservation status
	Fossil
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Sauropsida
Superorder:	Dinosauria
Order:	Ornithischia
Infraorder:	Ornithopoda
Family:	Hadrosauridae
Subfamily:	Hadrosaurinae
Genus:	Saurolophus; Brown, 1912

Saurolophus was a duck-billed dinosaur. It lived during the Upper Cretaceous period, 69.5-68.5 million years ago,^[1] toward the end of the Mesozoic Era.

Saurolophus had a 5 inch (13 cm) long bony spike extending up from its forehead. There is speculation that this spike was attached to a flap of skin that covered the nostrils and could be blown up for displays and noise-making. Many Saurolophus fossils have been found, including one with fossilized skin impressions, in Alberta, Canada and Mongolia, China.

References

↑ Arbour, Victoria M.; Burns, Michael E.; Sissons, Robin L. (2009). "A redescription of the ankylosaurid dinosaur Dyoplosaurus acutosquameus Parks, 1924 (Ornithischia: Ankylosauria) and a revision of the genus". Journal of Vertebrate Paleontology. 29 (4): 1117–1135. doi:10.1671/039.029.0405. S2CID 85665879.

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[ABS09-1] Arbour, Victoria M.; Burns, Michael E.; Sissons, Robin L. (2009). "A redescription of the ankylosaurid dinosaur Dyoplosaurus acutosquameus Parks, 1924 (Ornithischia: Ankylosauria) and a revision of the genus". Journal of Vertebrate Paleontology. 29 (4): 1117–1135. doi:10.1671/039.029.0405. S2CID 85665879.

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