Deuterostomia
Like the protostomes, the deuterostomes are
bilaterally symmetrical
triploblastic
coelomate
But unlike the protostomes, in deuterostomes
blastopore becomes the anus (secondary opening becomes the mouth)
coelom derived via enterocoely
cleavage is radial and indeterminate
nervous system is primitively dorsal
circulatory system is primitively ventral