Papillocyathus ROZANOV in ZHURAVLEVA, KONYUSHKOV & ROZANOV,1964
Specimen-type: Papillocyathus vacuus holotype, ZHURAVLEVA, KONYUSHKOV & ROZANOV, 1964, pl. 10, fig. 1-2
Systematics:
Order: AJACICYATHIDA R. Bedford& J. Bedford, 1939
Suborder: DOKIDOCYATHINA Vologdin, 1957
Superfamily: PAPILLOCYATHOIDEA Rozanov, 1989
Family: PAPILLOCYATHIDAE Rozanov, 1989