Fig. 10

Alternative hypotheses of the evolution of the panarthropod brain. Scenario of the evolution of the brain suggesting that either a segmental ganglia or b medullary nerve cords were the ancestral feature in panarthropods
Alternative hypotheses of the evolution of the panarthropod brain. Scenario of the evolution of the brain suggesting that either a segmental ganglia or b medullary nerve cords were the ancestral feature in panarthropods