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| Dentinogenesis imperfecta | |
|---|---|
| |
| Two Dilophosaurus attacking a Dentinogenesis | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Sauropsida |
| Superorder: | Dinosauria |
| Order: | Saurischia |
| Suborder: | †Sauropodomorpha |
| Genus: | †Dentinogenesis |
| Binomial name | |
| †Dentinogenesis imperfecta Karlos, 1998 | |
Dentinogenesis (meaning 'imperfect dentine formation') is an extinct genus of basal sauropodomorph from rocks in either Montana or Conneticut.[1] The type and only species is D. imperfecta. It was originally interpreted as a theropod due to the scarcity of the remains.[2]
Discovery and naming
In 1986, paleontologist Freidrick Karlos tracked down an illegally sold dinosaur fossil in Colorado, USA that was probably discovered sometime during the "Bone Wars".[3] It was still encased in the sediment and, after a fifteen hour long acid bath, the fossil was prepared.
It consisted of a weathered maxilla with exceptionally preserved teeth, a scapula and a broken pes. Karlos went on to describe it as the new genus and species Dentinogenesis imperfecta in 1988 based on the teeth of the animal. He described it as a "long necked theropod, similar to that of Segnosaurus."[2]
He was wrong and, in 2019, the genus was reclassified as a basal sauropodomorph by the Xinner sisters.[1]
It is not known where the fossil came from, as Karlos 1988 states that it was a theropod that came from the Hell Creek Formation in Montana while Kemp (2015) states that it was a basal sauropod that came from Conneticut. Kemp is probably correct. The sediment was also destroyed during the acid bath, so identification became impossible.
References
- ↑ 1.0 1.1 Xinner, Hayley; Xinner, Jane; Xinner, Faith; Xinner, Thomas (2019). "Redescription of Dentinogenesis (Dinosauria: Sauropodomorpha) from ?Conneticut". IVPP. 1984732 (6): 66-121.
- ↑ 2.0 2.1 Karlos, Freidrick (1988). "A new theropod (Dinosauria: Theropoda) from the Late Cretaceous of Montana with perculiar teeth". IVPP. 2991 (5): 78-79.
- ↑ Mylters, Bob (2006). The Bone Wars Encyclopaedia. United States: Indiana University Press.