Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Deuterostome (Deuterostomia)
Hemichordata (Hemichordates)
Graptolithinia (Graptolithina)
Graptoloidea
Children (4 direct children, 4 direct and indirect children):
Retiolites
Plectograptinae
Retiolitinae
Petalolithinae