Neornithischia

† Neornithischia is the clade of ornithischian dinosaurs including thyreophorans, pachycephalosaurs, ceratopsians, and ornithopods. This major group of herbivorous dinosaurs dominated Late Jurassic and Cretaceous terrestrial ecosystems globally.

Diet & Feeding

Herbivore

Neornithischia 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

Neornithischia 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.