Anthozoa - Stauriida - Kleopatrinidae

Alternative combination: Petalaxis grandis

Belongs to Protowentzelella according to J. Fedorowski et al. 2007

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

Ecology: stationary epifaunal suspension feeder