151 files founds
reference:
2006 Radashevsky VI, Migotto AE. Photoreceptive organs in larvae of Spionidae (Annelida) and Sipuncula. Journal of Zoology, 268(1980): 335-340, doi:10.1111/j.1469-7998.2006.00092.x, url:http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.2006.00092.x/full