DOMAIN: Eukarya

KINGDOM: Animalia

SEVENTEEN

Emergent Chordates II

adapted from Biology 182 Lab 40b Phylum Chordata (youtube); & Biology (2002)

ancestral colonial choanoflagellate

eumetazoa

(true tissues)

parazoa

 (not true tissues, but single cells, forming a multi-cellular colony, i.e., sponges (porifera))

radiata

bilateria

acoelomates (no body cavity)

coelomates

(body cavity enclosed by mesoderm)

pseudo-coelomates

(body cavity not enclosed by mesoderm)

protostomes

deuterostomes

PHYLUM:

Chordata

hemichordata

echinodermata

(arthropods)