Prostega gigas
Giant Marine Turtle/reptile
giant marine turtle
Fossil Size:
Shell: 4 feet long
Body: 7 feet long
Diet: Carnivore
Habitat: Aquatic
When: 97-66 Million Years Ago
Skeletal Features: This giant turtle's shell was not solid, in fact, it was made of a thick web of bone, which served to reduce its weight. Like their descendents today, these ancient turtles could not retract their bodies into their shells. How did they defend themselves from predators? They used their huge front legs for a quick and powerful undersea getaway!

© 1999 Carnegie Museum of Natural History