All posts in Knowledge

  • Estonia has secret underground rivers

    In the old Estonian myths, there are stories about aquatic birds and even cattle being…

The trilobite and its compound eye. (A) Holotype. (B) Head region of A. (C) Fields of view. (D) Abraded part of the right eye. Arrowheads indicate the ommatidial columns. (E) Lateral view of the right eye. (F) Schematic drawing of E. (G) Two visual units (big arrows in D). (H) Schematic drawing of G. (Scale bars: A–C, 1 cm; D, 1 mm; E and F, 2 mm; and G, 200 μm.) Photo: National Academy of Sciences