Inostranceviinae

Inostranceviines Temporal range: Lopingian, 260–251.9  Ma PreꞒ Ꞓ O S D C P T J K Pg N It is possible that they developed as early as the Wordian era.
Visualized head of Inostrancevia latifrons .
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	† Gorgonopsia
Family:	† Gorgonopsidae
Subfamily:	† Inostranceviinae Pravoslavlev, 1927 [1]
Genera
† Inostrancevia † Pravoslavlevia

Inostranceviinae is an extinct subfamily of gorgonopsid therapsids that lived during the Late Permian. Only two genera are known, both from Russia. ^[2]

References

1. "BioLib: Biological library".
2. "Inostranceviinae". Fossilworks.