Genus: Stephanospondylus STAPPENBECK, 1905
Etymology: Greek, stephane, "crown, helmet" and Greek, spondylus, "vertebrae."

Species: pugnax (GEINITZ & DEICHMULLER, 1882) STAPPENBECK, 1905
Etymology: Latin, pugnax, "combative, fond of fighting."
= Phanerosaurus pugnax GEINITZ & DEICHMULLER, 1882

Holotype: Staatliches Museum fur Mineralogie und Geologie zu Dresden.

Locality: Plauenschen Grunde, near Dresden, Niderhasslich, Sachsen State, Germany.

Horizon:

Biostratigraphy:

Age: Autunian, Middle Rotliegendes Epoch, Early Permian.

Material: Fragmentary skull and fragmentary skeleton.

Referred material:

FMNH UR 448: Cast of type.

 

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Species:traati (TATARINOV, 1974) BULANOV, 2023
= Bolosaurus traati TATARINOV, 1974
Etymology:

Holotype: PIN 3318/1

Locality: Mylva Locality, headwaters of Yuzhnava Mviva River, Shakhyvich homestead, Komi Republic, European Russia.

Horizon:

Biostratigraphy:

Age: Asselian stage, Early Permian.

Material: Left maxilla.