Anthozoa - Stauriida - Kleopatrinidae

Alternative combination: Petalaxis kunthi

Synonym: Lithostrotion (Lithostrotionella) dilatata Easton 1960

Belongs to Protowentzelella according to Fedorowski et al. 2007

Sister taxa: Protowentzelella aseptatum, Protowentzelella columellata, Protowentzelella cystosa, Protowentzelella dubiosa, Protowentzelella gigantea, Protowentzelella grandis, Protowentzelella hyporiphaea, Protowentzelella longiseptata, Protowentzelella major, Protowentzelella minima, Protowentzelella noinskyi, Protowentzelella permica, Protowentzelella perpasta, Protowentzelella regularis, Protowentzelella shastensis, Protowentzelella variabilis