Argonaut and oyster from Bertuch's 'Bilderbuch fur Kinder,' Germany, 1798

Great argonaut, Argonauta argo 1, rough penshell, Pinna rudis 2, and European flat oyster, Ostrea edulis 3. Handcoloured copperplate engraving from Bertuch's 'Bilderbuch fur Kinder' (Picture Book for Children), Weimar, 1798. Friedrich Johann Bertuch (1747-1822) was a German publisher and man of arts most famous for his 12-volume encyclopedia for children illustrated with 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830. (Photo by: Florilegius/Universal Images Group via Getty Images)