Group of related phyla

It's a Kingdom

basically when talking about the name of a group of related ____ the order goes backwards:

species- the final classification of an organism

Genus- a group of related species

Family- a group of related Genera

Order- a group of related Families

Class- a group of related Orders

Phylum- a group of related Classes

Kingdom- a group of related Phyla

Domain- a group of related kingdoms