Secernosaurus
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 the Lago Colhué Huapi and Los Alamitos Formations of Argentina.
| Secernosaurus | |
|---|---|
 | |
| Reconstructed skeleton | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| 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 | |
Description
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 only hadrosaur from Gondwana until the discovery of Willinakaqe salitralensis in 2011.[1]
The type species is Secernosaurus koerneri, described in 1979. A species named in 1984, Kritosaurus australis, is thought to be synonymous.[2]
See also
References
- Rubén D. Juárez Valieri; José A. Haro; Lucas E. Fiorelli & Jorge O. Calvo (2010). "A new hadrosauroid (Dinosauria: Ornithopoda) from the Allen Formation (Late Cretaceous) of Patagonia, Argentina" (PDF). Revista del Museo Argentino de Ciencias Naturales N.s. 11 (2): 217–231. Archived from the original (PDF) on 2011-09-03.
- Prieto–Marquez, Alberto; Salinas, Guillermo C. (2010). "A re–evaluation of Secernosaurus koerneri and Kritosaurus australis (Dinosauria, Hadrosauridae) from the Late Cretaceous of Argentina". Journal of Vertebrate Paleontology. 30 (3): 813–837. doi:10.1080/02724631003763508.
Further reading
- M. K. Brett-Surman. 1979. Phylogeny and palaeobiogeography of hadrosaurian dinosaurs. Nature 277:560-562
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