Dragonflies, from the order Odonata, have been around for
over 250 million years. The most conspicuous difference in their evolution over
time is the steady shrinking of their wingspan from well over two and a half
feet down to a few inches.
Voracious predators, today they dine on bees, wasps,
butterflies and avoid the attentions of birds and wee lizards -- but back in the day, they had a much larger
selection of meals within their grasp. Time has turned the tables. Small lizards and birds who
today choose dragonflies as a tasty snack used to be their preferred prey.
