Dianchungosaurus
Dianchungosaurus | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Clade: | Archosauria |
Clade: | Pseudosuchia |
Clade: | Crocodylomorpha |
Clade: | Crocodyliformes |
Genus: | †Dianchungosaurus Young, 1982 |
Species: | †D. lufengensis
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Binomial name | |
†Dianchungosaurus lufengensis Young, 1982
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Synonyms | |
Dianchungosaurus (meaning "
Material
Two specimens were originally referred to this taxon:[1]
- IVPP V4735a (holotype): an isolated premaxilla.
- IVPP V4735b (paratype): cojoined partial left and right dentaries with teeth and left splenial
Both remains come from the Lower
Systematics
Originally classified by Young in 1982 in Heterodontosauridae,[1] Dianchungosaurus lufengensis' affinities were doubted by some, who regarded it as a nomen dubium, but it was until recently usually considered a valid heterodontosaurid. In 2005, a paper by Barrett and Xu focused on this problematic taxon and found its specimens to form an hypodigm, a chimera of different animals. The holotype, IVPP V4735a, was reclassified as a mesoeucrocodylian, while the paratype, IVPP V4735b, was found to be an indeterminate sauropodomorph.[2]
To maintain the stability in the literature, the holotype retains the name D. lufengensis, while the paratype awaits a formal description.[2]
References
- ^ a b c d e C.-C. Young. (1982). [On a new genus of dinosaur from Lufeng, Yunnan]. Selected Works of Yang Zhungjian. Science Press, Beijing 38-42
- ^ S2CID 89542580.
- ^ Zhao, (1986). The Cretaceous biota of China: Reptilia. in Hao, Su, Yu, Li, Li, Wang, Qi, Guan, Hu, Liu, Yang, Ye, Shou and Zang (eds.). The Cretaceous System of China. Stratigraphy of China. 12, 67-73, plates XI, XII.
External links
- Dianchungosaurus in the Paleobiology Database