Strophomenata - Productida - Productellidae

Alternative combination: Productus gefoensis

Full reference: B. Licharew. 1937. Brachiopoda of the Permian system of USSR, Fasc. I. Permian Brachiopoda of north Caucasus, families Chonetidae Hall et Clarke and Productidae Gray. Paleontology of USSR Monographs 39:1-151

Belongs to Haydenella according to B.K. Licharew and G.V. Kotlyar 1978

Sister taxa: Haydenella bihemisphaera, Haydenella buravasi, Haydenella carina, Haydenella chilianshaniana, Haydenella deminuta, Haydenella dutkevitchi, Haydenella elongata, Haydenella eminens, Haydenella granti, Haydenella heilongjiangensis, Haydenella khasorensis, Haydenella kiangsiensis, Haydenella libera, Haydenella miaolingensis, Haydenella minuta, Haydenella nanusa, Haydenella paradoxica, Haydenella plicata, Haydenella qinglongensis, Haydenella salinaria, Haydenella subextensa, Haydenella tersa, Haydenella wangqingensis, Haydenella wenganensis, Haydenella wilczeki, Haydenella zhejiangensis, Productus (Haydenella) quaesitus

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): valve 11.3 x 14.5