Nemertea: Anopla: Heteronemertea
10x Plan Fluor / 20x Plan Apo / 40x Plan Fluor / 100x Plan Fluor. DIC / Phase Contrast. Sampled in Bay of Santander. June, 10th 2017.
Pilidium aff. magnum. Its epidermal cell outlines are conspicuous and form a hexagonal geometry. The juvenile, that develops in the episphere center, has caudal cirrus and doesn’t have eyes.
Lacalli, T.C. (2005). Diversity of form and behavior among nemertean pilidium larvae. Acta Zoologica, 86: 267-276.
Norenburg, J.L. & Stricker, S.A. (2002). Phylum Nemertea. Chapter 7, Atlas of Marine Invertebrate larvae. Young, C.M., Sewell, M.A., & Rice, M.E. (eds). Academic Press. San Diego, CA.