Dysganus
| Dysganus | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Sauropsida |
| Superorder: | Dinosauria |
| Order: | Ornithischia |
| Infraorder: | Ceratopsia |
| Family: | Ceratopsidae |
| Genus: |
Dysganus Cope, 1876 |
| Type species | |
|
Dysganus encaustus Cope, 1876 |
|
| Species | |
|
D. encaustus Cope, 1876 |
|
D. encaustus Cope, 1876
D. bicarinatus Cope, 1876
D. peiganus Cope, 1876
Dysganus is the name given to a dubious genus of dinosaur from the Late Cretaceous. It was a ceratopsian. Its fossils have been found in Montana.
The species assigned to this dubious genus include Dysganus encaustus, D. bicarinatus, and D. peiganus, but are all tooth taxa, based solely on teeth. A fourth species, Dysganus haydenianus, is also known, based on ceratopsian teeth. All species were described by Edward Drinker Cope in 1876. In 1907, Hatcher redescribed the teeth of Dysganus, and found that the genus was a nomen dubium. The teeth of D. peiganus were thought to be from a stegosaurian by Lull and Wright in 1942.
The types of each species consist of one to eight teeth, all being detached.
Cope (1876) originally classified Dysganus in Trachodontidae, a family of hadrosaurids from the Judith River beds.
The type species, D. encaustus, is known from the Judith River Formation (Cope, 1876). It lived alongside the dubious genera Palaeoscincus, Cionodon, Diclonius, and Monoclonius.
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