Figure 3.

Evolution of egg-laying behavior in Odonata are shown in accordance with the recovered phylogenetic relationships

Lineages with endophytic oviposition, those that lay their eggs in plant material, are shaded in green. Lineages with exophytic oviposition (usually laying eggs on the surface of water) are shaded in blue. Origin of the predators that may have influenced the evolution of egg-laying strategies in dragonflies and damselflies are represented along the geological time scale. Silhouettes of putative predators that were present at various geological times (left to right): fish, frogs, pterosaurs, and birds. All the ages along the geological time scale are in millions of years.