Related how?

Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Nephrozoa (Eubilateria)
Protostome (Protostomia)
Spiralia (Spiralians)
Lophotrochozoa
Brachiozoa (Phoronozoa)
Brachiopoda (Lamp shell)
Rhynchonelliformea
Strophomenata
Productida
Lyttoniidina

Richthofenioidea (21591498)

Children (3 direct children, 6 direct and indirect children):

Richthofeniidae (tree size 1)

Cyclacanthariidae (tree size 2)

Gemmellaroiidae