Dysagrion packardi   scale in cms CLASS - Insecta ORDER - Odonata FAMILY - Calopterygidae GENUS/SPECIES - Dysagrion packardi ROCK UNIT - Parachute Creek Member of Green River Formation AGE - Eocene Epoch (48 million years old) LOCALITY - Douglas Pass, Garfield Co., Colorado, USA A damselfly is similar to a dragonfly except that it holds its wings together vertically over the body, instead of horizontally. Damselflies are aerial predators which eat smaller insects. PRI 40778