Extended Data Fig. 1: Preservation of eyes and lens in selected fossil vertebrates.
From: Four camera-type eyes in the earliest vertebrates from the Cambrian Period
a-b, Haikouichthys ercaicunensis (YNGIP-90285) showing lateral eyes (grey) and pineal eyes (green) with lens (blue). c, carbon element map of H. ercaicunensis (YNGIP-90285) head. d, H. ercaicunensis (YNGIP-90284), white arrows showing lens. e, H. ercaicunensis (YNGIP-90296). f, carbon element map of H. ercaicunensis (YNGIP-90296), yellow arrows indicating left pineal eye. g, (YNGIP-90283), eyes of H. ercaicunensis showing lens (white arrows). h, eyes of H. ercaicunensis showing lens (white arrows) (YNGIP-90289). i, carbon element map of the same region in h, note the absence of carbon in the lens (white arrows). j, m, lens in Elonichthys peltigerus (ROM56794). k, n, lens in Platysomus circularis (PF7333). l, o, lens in Bandringa rayi (ROM56789). (j–o) image courtesy of Thomas Clements. Scale bars, 200 μm (a–f); 50 μm (g–i); 5 mm (j–o). Panels j–o reproduced with permission from ref. 7, Springer Nature Limited.
