Anthozoa - Stauriida - Petalaxidae

Synonyms: Petalaxis kennedyi Wilson 1982, Petalaxis pecki Wilson 1982

Belongs to Petalaxis according to C. H. Stevens 2009

Sister taxa: Petalaxis allisonae, Petalaxis baculatus, Petalaxis beauchampi, Petalaxis branisai, Petalaxis crassicolumnus, Petalaxis ellesmerensis, Petalaxis elyensis, Petalaxis exiguus, Petalaxis mokomokensis, Petalaxis multilamellatus, Petalaxis occidentalis, Petalaxis parvus, Petalaxis sutherlandi, Petalaxis thorsteinssoni

Ecology: stationary epifaunal suspension feeder