Fig. 3
From: Peripheral sensory neurons govern development of the nervous system in bivalve larvae
Schematic depiction of the location of early sensory elements in representative members of different lophotrochozoan groups. The long axons of early peripheral neurons (gray color) are arranged similarly in two parallel nerve bundles along the ventral side of the larvae, where the anlagen of the lateral nerve cords will later form. a Larvae of the mussel Mytilus trossulus and the chiton Ischnochiton hakodadensis; b Larva of the oyster Crassostrea gigas; c Larva of the gastropods Tritonia diomedea, Aplysia californica, and Lymnaea stagnalis; d Larva of the annelids, Phyllodoce maculata and Platynereis dumerilii