Figure 2

Eyes of the paratype of Voulteryon parvulus (MNHN.F.A29151): (A,B) complete specimen, in dorsal view, under cross-polarized light with part (A) and counterpart (B,C) dorsal and lateral surface of left-eye showing some preserved arrays with imprints of ommatidial lenses (SEM); (D) hexagonal array with imprints of ommatidial lenses (SEM); (E) eroded area of the eye showing what may be section of distal rhabdoms¹⁴, possibly at the transition between hexagonal (white asterisks) and quadrate arrays (black asterisks), the middle row appears to be intermediate (black and white asterisks) (SEM); (F) dorsal and lateral surface of right-eye showing some preserved arrays of ommatidial lenses (SEM); (G,H) hexagonal array of ommatidial lenses (SEM). Scale bars: 5 mm (A,B), 0.5 mm (C,F), 0.1 mm (D,G,H), 50 µm (E). Images: Denis Audo (A–E) and Ninon Robin (F–H).