Protostomia (frae Greek πρωτο- proto- "first" an στόμα stoma "mooth") is a clade o ainimals.

Protostomes
Temporal range: Ediacaran - Recent
Centipede.jpg
A centipede (Ecdysozoa)
Scientific classification e
Kinrick: Animalia
Clade: ParaHoxozoa
Clade: Bilateria
Clade: Nephrozoa
(unranked): Protostomia
Grobben, 1908
Superphyla