Ornithopoda (/ ˌɔːrnəˈθɒpədə /) [2] is a clade of ornithischian dinosaurs, called ornithopods (/ ˈɔːrnəθəˌpɒdz, ɔːrˈnɪθ -/). [3][4] They represent one of the most successful groups of herbivorous dinosaurs during the Cretaceous.

2019年3月8日 · Ornithopods were the most common dinosaurs of the Mesozoic Era, roaming the plains and woodlands in vast herds, eating plants.

2024年7月2日 · Hadrosaurid footprints and isolated hadrosaurid teeth are among the most common Late Cretaceous fossils of North America. Skin impressions and even mineralized soft tissue are known for duckbills. The latest on-going phylogenetic analyses show two major subclades of Hadrosauridae: crested Lambeosaurinae and broad-snouted Saurolophinae .

2019年6月15日 · Ornithopods—the family of mostly small, mostly bipedal, and completely unfeathered herbivorous dinosaurs—are the last creatures you would expect to sport mammal-like canines in their jaws, the strange feature that makes Echinodon such an unusual fossil find. Like other ornithopods, Echinodon was a confirmed plant-eater, so this dental ...

This list will include the type fossils of each ornithopod species.In paleontology, a type specimen is one which is definitionally a member of a biological taxon.Additional specimens can only be "referred" to these taxa if an expert deems them sufficiently similar to the type and publishes that opinion in the scientific literature.

2023年7月18日 · Several fossil remains of an ornithopod dinosaur found at the Barrihonda-El Humero site (RD-10, Riodeva, Teruel, Spain) revealed the presence of a new taxon, Oblitosaurus bunnueli gen. et sp. nov. diagnosed on the basis of five appendicular autapomorphies.

The ornithopods flourished from the Late Triassic Period to the Late Cretaceous Period (about 229 million to 65.5 million years ago) and were one of the most successful and enduring dinosaur lineages.

For one thing, the Hypsilophodontidae are now considered a paraphyletic grade of early ornithopod-like cerapodans (Zheng et al. 2009, Butler et al. 2011, Dinosaur Supertree, Open Dinosaur Project); for another, the imformal subfamilies coined here are most likely polyphyletic, although some genera, such as Othnielia (= Othnielosaurus), would sem...

In recent years, considerable controversy arose surrounding the systematic relationships of taxa traditionally considered to be basal members of Ornithopoda (i.e., heterodontosaurids and hypsilophodontids).

2021年10月1日 · New remains hadrosaurid ornithopods from the Latest Cretaceous of the Lago Colhué Huapi Formation (Chubut Group, Golfo San Jorge Basin) are reported. The distribution of Late Cretaceous ornithopods in southern South America was directly related to paleoenvironmental conditions.