Phymosteus

Phymosteus; Temporal range: Early Famennian[1]
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

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

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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.