Secernosaurus

Secernosaurus Temporal range: Late Cretaceous, Maastrichtian PreЄ Є O S D C P T J K Pg N
Mount labeled Kritosaurus australis, a synonym of S. koerneri
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Dinosauria
Order:	†Ornithischia
Suborder:	†Ornithopoda
Family:	†Hadrosauridae
Subfamily:	†Saurolophinae
Tribe:	†Kritosaurini
Genus:	†Secernosaurus Brett-Surman, 1979
Type species
†Secernosaurus koerneri Brett-Surman, 1979
Synonyms
Kritosaurus australis Bonaparte, 1984

Kritosaurus australis Bonaparte, 1984

Secernosaurus (meaning "severed lizard") is a genus of herbivorous dinosaur. Secernosaurus was a hadrosaur, a "duck-billed" dinosaur which lived during the Late Cretaceous. Its fossils have been found in Argentina. Its name comes from the fact that it lived in South America, which during the Mesozoic Era was part of the southern supercontinent of Gondwana. Most other hadrosaurs lived in the northern supercontinent of Laurasia, so it was separated from its relatives. It was believed to be the hadrosaur from Gondwana until the discovery of Willinakaqe salitralensis in 2011.

The type species is Secernosaurus koerneri, described in 1979. A species named in 1984, Kritosaurus australis, is thought to be synonymous.