Nematodinium
sp. illustrating prominant ocellum that has complexity reminiscent of
molluscan and vertebrate single lens eyes (cornea, lens, retinal body).
Photograph by Gravelis et al. (2015) posted online. Gavelis, G.S., S. Hayakawa, R.A.
White III, T. Gojobori, C.A. Suttle, P.J. Keeling & B.S. Leander2015.Eye-like ocelloids are built from different endosymbiotically acquired
components.Nature 523: 204-207.
Ocelloid retinal
body ultrastructure.
TEM image from Gavelis et al. (2015) posted online.