Related how?
Biota
(Life)
Eukaryote
(Eukarya)
Chromista
Harosa
Halvaria
Alveolate
(Alveolata)
Ciliophora
(Ciliates)
Oligohymenophorea
Apostomatia
Astomatophorida (
25362009
)
Children (1 direct children, 7 direct and indirect children):
Opalinopsidae
(tree size 6)