(MA-men-chee-SORE-us)
Plant-eater
65 feet long
Middle Jurassic, 160 million years ago
China
Mamenchisaurus had the longest neck of any animal that ever lived. It stretches more than 30 feet and was swept low across the ground so the dinosaur could feed on low plants. Mamenchisaurus may have been the dumbest animal with a backbone ever! The huge Mamenchisaurus’s brain was smaller than a baseball.
