part of neuromast primordium migration anterior lateral line development anterior lateral line neuromast primordium migration The migration of a cluster of a relatively undifferentiated cell along the developing anterior lateral line, originating from cranial ectodermal placodes situated between the eye and the ear. The neuromast primordium deposits proneuromasts along the lateral line, from which the neuromasts will develop. ALL neuromast primordium migration GO:0048900 biological_process