part of lateral line nerve development posterior lateral line system development posterior lateral line nerve development caudal lateral line nerve development PLLN development GO:0048918 GO:0021733 biological_process The process whose specific outcome is the progression of the posterior lateral line nerve over time, from its formation to the mature structure. The posterior lateral line nerve innervates hair cells of the PLL and projects to an octavolateralis column in the hindbrain that consists of the medial octavolateralis nucleus (MON), the caudal octavolateralis nucleus, and the magnocellular nucleus.