Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Parazoa
Porifera (Sponges)
Hexactinellid (Hexactinellida)
Hexasterophora
Lyssacinosida
Rossellidae
Rossellinae
Children (2 direct children, 2 direct and indirect children):
Vitrollula fertilis
Vitrollula namiyei