Tornaria

A tornaria is the planktonic larva of some species of Hemichordata. It is very similar in appearance to the bipinnaria larvae of starfishes, with convoluted bands of cilia running around the body.[1]

References

  1. Nakajima Y; Humphreys T; Kaneko H; Tagawa K. (January 2004). "Development and neural organization of the tornaria larva of the Hawaiian hemichordate, Ptychodera flava". Zoolog. Sci. 21 (1): 69—78. PMID 14745106.