Genus: Baiopsis van HOEPEN, 1934
Etymology: Greek, baios, “insignificant, small”, Greek, opsis, “appearance, face”: Small face.

Species: leptorhinus (OWEN, 1876) HOEPEN, 1934
Etymology: Greek, lepto, "slender, thin" and Greek, rhinus, "snout."
= Cistecephalus leptorhinus OWEN, 1876
= Kistecephalus leptorhinus OWEN, 1876
= Baiopsis leptorhinus (OWEN, 1876)

Holotype: BMNH 47067

Locality: Stylkrans, Graaff Reinet District, Eastern Cape Province, South Africa.

Horizon:

Biostratigraphy: Cistecephalus zone.

Age: Tatarian Age, Lopingian Subepoch, Zechstein Epoch, Late Permian.

Material: Fragmentary skull.
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