Plesiosaurs couldn't retract their heads into their shells (unlike some other marine reptiles, they didn't have shells). elaborate
Some dinosaurs had feathers! elaborate
Ichthyosaurs, despite their fish-like appearance, were reptiles that gave birth to live young. elaborate
Trilobites molted their exoskeletons multiple times throughout their lives, leaving behind a fossil record of their growth stages. elaborate
Quetzalcoatlus had a wingspan that rivaled a small airplane, potentially reaching up to 36 feet (11 meters). elaborate
Fossil hunting requires a lot of patience; most fossil hunters spend hours, or even days, finding only a few small fragments. elaborate
Mosasaurus wasn't a dinosaur, but a giant marine reptile. elaborate