Sinophoneus

Sinophoneus; Temporal range: Middle Permian, 270 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Skull, Paleozoological Museum of China
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Suborder:	†Dinocephalia
Family:	†Anteosauridae
Subfamily:	†Anteosaurinae
Genus:	†Sinophoneus; Cheng and Ji, 1996
Species:	†S. yumenensis
Binomial name
	†Sinophoneus yumenensis; Cheng and Ji, 1996
Synonyms
	Stenocybus acidentatus Cheng and Li, 1997;

Sinophoneus is an extinct genus of dinocephalian therapsids in the family Anteosauridae. A single fossilized skull (GMV 1601) has been found from the Middle Permian Xidagou Formation of China.^[1]

Description[]

Restoration of Sinophoneus based on IGCAGS V 361, originally classified as Stenocybus acidentatus

Restoration of Sinophoneus yumenensis

Sinophoneus is characterized by a wide snout and by a ridge that runs along the midline of the skull between the eye sockets. The anteosaur Stenocybus acidentatus has also been named from the Xidagou Formation on the basis of a skull (IGCAGS V 361) and fragmentary jaw bones, but likely represents a juvenile form of Sinophoneus. Juvenile features include its smaller size, larger eye sockets and taller skull. Both GMV 1601 and IGCAGS V 361 have large rounded snouts, distinguishing them from most other anteosaurs and suggesting that they are closely related.^[2]

References[]

^ "Dolichorhynchops - Facts and Pictures". 12 October 2016.
^ Kammerer, C.F. (2011). "Systematics of the Anteosauria (Therapsida: Dinocephalia)". Journal of Systematic Palaeontology. 9 (2): 261–304. doi:10.1080/14772019.2010.492645. S2CID 84799772.

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[1] "Dolichorhynchops - Facts and Pictures". 12 October 2016.

[KCF11-2] Kammerer, C.F. (2011). "Systematics of the Anteosauria (Therapsida: Dinocephalia)". Journal of Systematic Palaeontology. 9 (2): 261–304. doi:10.1080/14772019.2010.492645. S2CID 84799772.

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[2]