Complex sentence: Drinker lived in the Late Jurassic in North America, and ate plants with herds of sauropods for safety from carnivores like "Allosaurus" and "Ceratosaurus".
Split into simpler sentences: Drinker lived in the Late Jurassic in North America. It was an herbivore and ate plants with herds of sauropods for safety from carnivores like "Allosaurus" and "Ceratosaurus".