Biota (Life)
Eukaryote (Eukarya)
Chromista
Harosa
Halvaria
Alveolate (Alveolata)
Ciliophora (Ciliates)
Spirotrichea (Spirotrich)
Oligotrich (Oligotrichia)
Oligotrichida
Strombidiidae
Opisthostrombidium (25362503)
Children (2 direct children, 2 direct and indirect children):
Opisthostrombidium montagnesi
Opisthostrombidium wilberti