Related how?
Biota
(Life)
Eukaryote
(Eukarya)
Chromista
Harosa
Halvaria
Alveolate
(Alveolata)
Ciliophora
(Ciliates)
Spirotrichea
(Spirotrich)
Sporadotrichida
Oxytrichidae
Stylonychinae
Rigidohymena
Rigidohymena quadrinucleata (
62009874
)