Tornaria larva -Enteropneusta-

Hemichordata: Enteropneusta: Ptychoderidae: Balanoglossus

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10x Plan Fluor / 20x Plan Apo / 40x Plan Fluor / 60x Plan Fluor.  DIC. Sampled in Bay of Santander. May, 28th 2017.

Early Metschnikoff stage.

It may be Balanoglossus clavigerus Delle Chiaje, 1829.

 

Stiasny 1913

Stiasny (1913)

 

References
Burdon-Jones, C. (1957). Hemichordata. Enteropneusta Tornaria larvae. Identification leaflets for plankton (No. 70). International Council for the Exploration of the Sea.
Larink, O. & Westheide, W. (2011). Coastal plankton. Verlag Dr.Friedrich Pfeil. München. (see Plate 67).
Stiasny, G. (1913). Studien über die Entwicklung des Balanoglossus claviers Delle Chaise. Mitteilungen Zool. Station zu Neapel. .22, 8.
Todd, C.D. & Laverack, M.S. (1991). Coastal marine zooplankton. A practical manual for students. Cambridge University Press. (see Figs. 47, 48).

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