What phylum does a deer belong to?

The deer belongs to the Chordata phylum. I will list the entire classification structure below for the red stag deer, just in case you need it.

Kingdom: Animalia

Phylum: Chordata

Class: Mammalia

Infra-class: Eutheria

Order: Artiodactyla

Suborder: Ruminantia

Infraorder: Pecora

Family: Cervidae