Related how?

Biota (Life)
Eukaryote (Eukarya)
Chromista
Harosa
Halvaria
Alveolate (Alveolata)
Ciliophora (Ciliates)
Oligohymenophorea
Peritrichia (Peritrich)
Sessilida (Sesselida)
Operculariidae
Opercularia (Opercularia (ciliate))

Opercularia nutans (62001961)