part of lateral line development anterior lateral line system development anterior lateral line development anterior LL development biological_process The process whose specific outcome is the progression of the anterior lateral line over time, from its formation to the mature structure. The anterior lateral line consists of small sensory patches (neuromasts) located superficially on the skin or just under the skin in fluid-filled canals on the head of all fishes and most amphibians. The anterior lateral line develops from cranial ectodermal placodes situated between the eye and ear. GO:0048899