Species: capensis OWEN, 1884
Etymology:In reference to Cape Province, South Africa.

Holotype: BMNH R455

Locality: Beersheba, Burghersdorp, Eastern Cape Province, South Africa.

Horizon: Katberg Formation, Beaufort Group.

Biostratigraphy: Lystrosaurus Assemblage zone.

Age: Early Scythian Epoch, Early Triassic.

Material: Fragmentary skull and fragmentary dentary.

Referred material:

R503: Fragmentary skull and fragmentary clavicle.

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Species: uralensis SHISHKIN, 1994
Etymology: In reference to the Ural Mountains in Russia and Kazakhstan.
= Rhytidosteus uralensis SHISHKIN, 1993 (nomen vanum)

Holotype: PIN No. 2394/17

Locality: Kzyl-Say I locality, Burta River Basin, Orenburg region, Southern Cis-Urals, European Russia.

Horizon: Petropavlovskaya Svita, Yarenskian Gorizont.

Biostratigraphy:

Age: Upper Buntsandstein, Uppermost Olenekian Stage, upper Scythian Epoch, Early Triassic.

Material: Anterior part of left lower jaw.

Referred material:

PIN No. 2394/18: Right ectopterygoid with part of pterygoid.

 

Locality: Kzyl-Say III locality, Burta River Basin, Orenburg region, Southern Cis-Urals, European Russia.

Horizon: Petropavlovskaya Svita, Yarenskian Gorizont.

Biostratigraphy:

Age: Upper Buntsandstein, Uppermost Olenekian Stage, upper Scythian Epoch, Early Triassic.

Material:

PIN No. 2394/19: Left nasale.

TVERKOKHLEBOV, TVERDOKHLEBOVA, SURKOV & BENTON, 2002

Locality: Point 2, Kyzl-say III site, upper reaches of Kzyl-Oba River, (drainage basin of left bank of the Ural River), opposite of AndreevkaVillage, Orenbrug Province, European Russia.

Horizon: Upper fossiliferous level, Petropavlovskaya Svita, Yarenskian Gorizont.

Biostratigraphy:

Age: Upper Buntsandstein, Uppermost Olenekian Stage, upper Scythian Epoch, Early Triassic.

Material:

Number: Not given: Skull fragment.

Locality: Kzyl-Say, Kzyl-Say ravine (Drainage basin of left bank of the Ural River), 0.5-1 km west of AndreevkaVillage, Orenbrug Province, European Russia.

Horizon: Upper fossiliferous level, Petropavlovskaya Svita, Yarenskian Gorizont.

Biostratigraphy:

Age: Upper Buntsandstein, Uppermost Olenekian Stage, upper Scythian Epoch, Early Triassic.

Material:

Number: Not given: