Trochophore larva of a polynoid worm

Annelida: Polychaeta: Phyllodocida: Polynoidae

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The images were taken on four levels of focus.
20x Plan Apo. DIC. Sampled in Bay of Santander. February 25th 2017.

 

 

References
Crumrine, L. (2001). Polychaeta. In Identification guide to larval marine invertebrates of the Pacific Northwest. Edit. Shanks, A.L. Oregon State University Press. (see Fig. 23).
Lacalli, T.C. (1980). A guide to the marine flora and fauna of the Bay of Fundy: Polychaete larvae from Passamaquoddy bay. Canadian Technical Report of Fisheries and Aquatic Science 940. (see Fig. 67).
Rasmussen, E. (1956). Faunistic and biological notes on marine invertebrates III. The reproduction and larval development of some polychaete from the Isefjord, with some faunistic notes. Biologiske Meddelelser Det Kongelige Danske Videnskabernes Selskab. 23 no. 1. (see Figs. 3, 4).

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