Koreanosaurus - ornithopod - was created in 2011.

ornithology (ornithologist, ornithological, etc.), ornithopod, ornithopter, ornithosis

Xiaosaurus (xiaosaurus dashanpensi) an ornithopod, was a herbivore (plant eater) that lived during the Jurassic period. Xiaosaurus was little in comparison to the larger dinosaurs (sauropodomorphas, sauropods, ankylosaurs, stegosaurs, ceratopsias) meauring in at 1 ft (30 cm) with a length of 3 ft (1 m) and weight of 15 lbs (7 kg).

Stegosaurus lived in what is now the USA between 155 and 150 million years ago, as well as Portugal.

In America, Stegosaurus would have lived alongside the carnivores Allosaurus, Epanterias, Saurophaganax, Ceratosaurus, Elaphrosaurus, Torvosaurus, and Ornitholestes, the sauropods Diplodocus, Apatosaurus, Camarasaurus, Barosaurus, Eobrontosaurus, and Brachiosaurus, the ornithopods Dryosaurus, Camptosaurus, Drinker, Othnielia, Othnielosaurus, Uteodon, the stegosaur Hesperosaurus, the ankylosaurs Mymooropelta and Gargoyleosaurus,

In Portugal, Stegosaurus probably lived alongside the carnivores Allosaurus, Ceratosaurus, and Lourinhanosaurus, the stegosaurids Miragaia and Dacentrurus, the ornithopod Draconyx, the ankylosaur Dracopelta, and the sauropods Lusotitan and Dinheirosaurus.