| Cionodon
Temporal range: Late Cretaceous, 70–66 Ma
↓ | |
|---|---|
| |
| Vertebra of C. arctatus | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Clade: | †Neornithischia |
| Clade: | †Ornithopoda |
| Family: | †Hadrosauridae |
| Genus: | †Cionodon Cope, 1874 |
| Type species | |
| †Cionodon arctatus Cope, 1874 | |
| Species | |
| |
| Synonyms | |
| |
Cionodon (meaning 'column tooth') is a dubious genusofhadrosaurid[1] dinosaur from the Late Cretaceous. The type species, C. arctatus, was found in the Denver FormationofLodge Pole Creek, Colorado and was formally described by Edward Drinker Cope in 1874 based on the holotype AMNH 3951, collected in 1873.[2] It is a nomen dubium because it is based on very fragmentary remains. Two other species have since been described: Cionodon kysylkumensis (Riabinin, 1931), based on the holotype CCMGE 1/3760 (a set of vertebrae) from Uzbekistan,[3] and Cionodon stenopsis (Cope, 1875), discovered in rocks from the Judith River FormationofAlberta, Canada in 1874.[4] Although both are probably hadrosaurs,[1] they are known only from fragmentary remains and Cionodon kysylkumensis has since been reclassified as Bactrosaurus kysylkumensis.[3]
|
| |||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||
 | This article related to ornithopod dinosaurs is a stub. You can help Wikipedia by expanding it. |
