Kiangyousteus
| Kiangyousteus Temporal range: Middle Devonian: Givetian,
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|---|---|
| File:Kiangyousteus yohu - 150524515.JPG | |
| Kiangyouosteus yohii fossil material | |
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Placodermi |
| Order: | †Arthrodira |
| Suborder: | †Brachythoraci |
| Family: | †Dunkleosteidae |
| Genus: | †Kiangyousteus Liu, 1955 |
| Type species | |
| Kiangyousteus yohii Liu, 1955
| |
Kiangyousteus is an extinct monotypic genus of dunkleosteid from the Middle Devonian: Givetian aged Guanwu Formation in the Sichuan province of south-western China. The type species, Kiangyousteus yohii, was the first known arthrodire from Asia.[1]
Etymology
[edit | edit source]Kiangyousteus is named after Jiangyou (formerly ‘Kiangyou’) district of Sichuan Province, the location where the fossils were found in 1953 by Professor S. H. Yoh of Peking University.[1]
Phylogeny
[edit | edit source]Kiangyousteus belongs to the family Dunkleosteidae. The phylogeny of Kiangyousteus can be shown in the cladogram below:[1]
Alternatively, the subsequent 2016 Zhu et al. study using a larger morphological dataset recovered Panxiosteidae well outside of Dunkleosteoidea, leaving the status of Dunkleosteidae as a clade grouping separate from Dunkleosteoidea in doubt, as shown in the cladogram below:[2]
References
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