Tenontosaurus

Tenontosaurus was a plant-eating dinosaur. Herbivores typically fed on ferns, cycads, conifers, and other vegetation available during their era. Many herbivorous dinosaurs developed specialized teeth and digestive systems for processing tough plant material.

Tenontosaurus lived during the Cretaceous Early period of the Mesozoic Era, approximately 145.0 to 100.5 million years ago.

白垩纪见证了恐龙的持续演化，鸟脚类和早期角龙类兴起。开花植物首次出现并开始改变陆地生态系统。棘龙和其他大型兽脚类在此时期生活。