noun. very large herbivorous dinosaur of the Jurassic and Cretaceous having a small head a long neck and tail and five-toed limbs; largest known land animal.
1. Noun, singular or mass Dinosaurs with long necks are part of the sauropod or plant-eating group. 2. Verb, base form This feature, which extends from New Mexico, is home to sauropod fossils, including a new species discovered in Montana in 1998.