Discover 30 awesome herbivores Did you know the Amargasaurus had huge spikes along its neck? Or that Triceratops could run as fast as a racehorse? Millions of years ago, more than 500 different species of plant-eating dinosaurs lived on our green planet. These dinosaurs helped the ecosystem by spreading seeds while their specially shaped teeth could chomp through any vegetation and keep the forests from overgrowing. From...