Shihtienfenia Temporal range: Changhsingian, 254.0–252.3 Ma[1] PreꞒ Ꞓ O S D C P T J K Pg N ↓
Fossils on display at the Paleozoological Museum of China
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	†Parareptilia
Order:	†Procolophonomorpha
Clade:	†Pareiasauria
Family:	†Pareiasauridae
Genus:	†Shihtienfenia Young & Yeh, 1963
Type species
†Shihtienfenia permica Young & Yeh, 1963
Species
†S. permica Young & Yeh, 1963 †S. completus Wang, Yi and Liu, 2019[2]
Synonyms[1]
Huanghesaurus liuliensis Gao, 1983 Shansisaurus xuecunensis Cheng 1980

Shihtienfenia was a pareiasaurid parareptile from the Late Permian of China.^[1]

Lee (1997) refers to S. xuecunensis as a metaspecies lacking the autapomorphies of Shihtienfenia. Tsuji & Müller (2009) seem to consider it a valid taxon for cladistic analysis, and like Lee 1997 place the two Chinese species close to Pareiasuchus.

S. permica (Young and Yeh, 1963); The skull of this pareiasaur is unknown. It is known originally from a number of isolated vertebrae, jaws, and limb-bones and an incomplete skeleton, all from the Shiqianfeng locality near Baode, Shanxi, part of the Sunjiagou Formation. Shanshisaurus xuecunensis Cheng, 1980 and Huanghesaurus liuliensis Gao, 1983 are synonyms.^[3]

S. completus (Wang, Yi and Liu, 2019); The first pareiasaur skull from Asia came from this species.

Shihtienfenia is unusual because of the presence of 6, rather than the usual 4, sacral vertebrae, and may belong in a separate subfamily, although Oskar Kuhn includes it under the Pareiasaurines in his monograph (Kuhn 1969). As with the Pareiasaurines the upper margin of the ilium is flat.

• Pareiasaurinae at Palaeos