Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Parazoa
Porifera (Sponges)
Calcarea (Calcareous sponge)
Calcaronea
Lithonida (Minchinellidae)
Petrobionidae
Children (2 direct children, 2 direct and indirect children):
Petrobiona massiliana
Petrobiona incrustans