Anaxagoras

Anaxagoras and the Eclipse: The First to Get It Right

Scholars sometimes credit Thales or Empedocles of Acragas with the first correct theory of solar eclipses, but it was Anaxagoras who had the science right.
Otto Marseus van Schrieck - Stilleben mit Insekten und Amphibien, 1662

A Recipe for Flies and Frogs

And other wonders of spontaneous generation.