Tenontosaurus tilletti

† Tenontosaurus tilletti is the type species of Tenontosaurus, common in the Cloverly Formation of Wyoming and Montana. Its large tail comprised nearly half its total body length, acting as a dynamic counterbalance during locomotion.

Diet & Feeding

Herbivore

Tenontosaurus tilletti 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.

Time Period

Cretaceous Early Mesozoic Era

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

The Cretaceous saw continued dinosaur evolution with the rise of ornithopods and early ceratopsians. Flowering plants first appeared and began to transform terrestrial ecosystems. Spinosaurus and other large theropods lived during this time.