Lenses of a Trilobite Eye

Latex replica, of a mould in fine sandstone, of a trilobite eye (Dalmanitina socialis, Ordovician Bohemia) which shows details of the inner surface of the lenses. In life, a thin calcitic bowl was attached to this inner surface so that the correcting doublet gave a sharp image.

The image represents an area approximately 630 µm wide.

Image courtesy of Prof. Euan Clarkson,

Geology and Geophysics, University of Edinburgh.