TWELVE

Emergent Archaic Life

adapted from multiple sources (see Bibliography)

LUCA

(last universal common ancestor)

Protista

bacteria

archaea

Eukarya

plants

fungi

Unikont

Prokaryote

Opisthokont

Unicellular flagellate

Choanoflagellate

parazoa

Eumetazoa

radiata

Bilateria

protostome

Deuterostome

3500 mya

541 mya

2200 mya (2.2 bya)

650 mya