Fig. 10From: Ultrastructure of cerebral eyes in Oweniidae and Chaetopteridae (Annelida) – implications for the evolution of eyes in AnnelidaGalathowenia oculata. Reconstruction of cerebral eye exemplifying structural characteristics of cerebral eyes in basal Annelida, arrows: cilia of PRC, arrowheads: cilia of PSC, asterisks: pigment-free apical parts of PSC, epidermis and neuropil of the brain only indicated by light grey colour. Abbreviations: cu cuticle, ecm ECM, ep epidermis, gc glial cell, ne neurite, nep brain neuropil, np nucleus of PSC, nr nucleus of PRC, prc photoreceptor cell, psc pigmented supportive cell, sd sensory dendrite of PRCBack to article page