Phymosteus

Phymosteus; Temporal range: Early Famennian
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Subphylum:	Vertebrata
Class:	Placodermi
Order:	Arthrodira
Suborder:	Brachythoraci
Infraorder:	Coccosteina
Superfamily:	Dinichthyloidea
Family:	Selenosteidae
Genus:	Phymosteus
Species:	P. liui
Binomial name
	Phymosteus liui; Wang, and Zhu

Phymosteus liui is a large selenosteid arthrodire placoderms known from the Lower Famennian Xiejingshi Formation of Shimen County, Hunan province, in central China.^[1]

The holotype and only known specimen of P. liui is a V-shaped median dorsal plate with a distinctive nubble texture.^[1] Because of the fossil's obviously incomplete nature, its exact relationship to the other selenosteids can not be satisfactorily determined beyond the fact that it was related to them.

References

^ ^a ^b ^c Wang, Junqing, and Min Zhu. "A new eubrachythoracid arthrodire from the upper devonian of Hunan China." Vertebrata Pal Asiatica 42.2 (2003): 154-161. [1]

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[WanZhu-1] Wang, Junqing, and Min Zhu. "A new eubrachythoracid arthrodire from the upper devonian of Hunan China." Vertebrata Pal Asiatica 42.2 (2003): 154-161. [1]

[1]