Stegosaurus ungulatus

† Stegosaurus ungulatus is a Late Jurassic Morrison Formation stegosaurid from Wyoming, one of the first Stegosaurus species named by O.C. Marsh. Its elongated cervical vertebrae and distinctive plate row contribute to stegosaur morphological diversity.

Diet & Feeding

Herbivore

Stegosaurus ungulatus 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

Jurassic Late Mesozoic Era

Stegosaurus ungulatus lived during the Jurassic Late period of the Mesozoic Era, approximately 161.5 to 145.0 million years ago.

One of the most iconic periods for dinosaurs. Giant sauropods like Brachiosaurus and Diplodocus roamed alongside predators like Allosaurus. Archaeopteryx, the earliest known bird, appeared. The Morrison Formation preserves an extraordinary fossil record from this time.