†Haploptyxis Akopyan 1976

Akopyan 1976. [Late Cretaceous gastropods of the Armenian SSR.] Akademiya Nauk Armyanskoi SSR, Erevan, 1976: 1-443

Akopyan 1973. [On the question of the systematics of Upper Cretaceous nerineids (Gastropoda).]. Izvestiya Akad Nauk armyan SSR (Nauki o zemle), 26(6) 1973: 3-14