Temporal range: Middle Jurassic - Late Cretaceous, 164–66 Ma
PreꞒ
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O
S
D
C
P
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Mounted skeleton of Parasaurolophus cyrtocristatus, Field Museum of Natural History
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Clade:
Dinosauria
Clade:
†Ornithischia
Clade:
†Cerapoda
Clade:
†Ornithopoda Marsh, 1881
Subgroups
†Ampelognathus?
†Burianosaurus
†Changmiania?
†Convolosaurus
†Gideonmantellia?
†Elasmaria
†Hypsilophodontidae?
†Iguanodontia
Synonyms[1]
?Clypeodonta? Norman, 2014
?Euornithopoda Sereno, 1986
?Hypsilophodontia Cooper, 1985
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. The most primitive members of the group were bipedal and relatively small-sized, while advanced members of the subgroup Iguanodontia became quadrupedal and developed large body size. Their major evolutionary advantage was the progressive development of a chewing apparatus that became the most sophisticated ever developed by a non-avian dinosaur, rivaling that of modern mammals such as the domestic cow. They reached their apex of diversity and ecological dominance in the hadrosaurids (colloquially known as 'duck-bills'), before they were wiped out by the Cretaceous–Paleogene extinction event along with all other non-avian dinosaurs. Members are known from all seven continents, though they are generally common in the Southern Hemisphere.
Ornithopoda (/ˌɔːrnəˈθɒpədə/) is a clade of ornithischian dinosaurs, called ornithopods (/ˈɔːrnəθəˌpɒdz, ɔːrˈnɪθ-/). They represent one of the most successful...
often listed as an infraorder within a suborder Ornithopoda, though Benton (2004) lists Ornithopoda as an infraorder and does not rank Iguanodontia....
Luis (2015). "Perinates of a new species of Iguanodon (Ornithischia: Ornithopoda) from the lower Barremian of Galve (Teruel, Spain)". Cretaceous Research...
there are derived forms classified in the groups Marginocephalia and Ornithopoda. The former includes clades Pachycephalosauria and Ceratopsia, while...
Hadrosauridae Cope, 1869) and Claosaurus agilis Marsh, 1872 (Dinosauria: Ornithopoda) from the Late Cretaceous of North America" (PDF). Zootaxa. 2765: 61–68...
England. It has traditionally been considered an early member of the group Ornithopoda, but recent research has put this into question. The first remains of...
Charles Marsh identified two major groups of herbivorous dinosaurs, Ornithopoda and Stegosauria, containing genera from a broad geographic and stratigraphic...
Tykoski, Contreras & Noto (2023) recovered as a basal member of the Ornithopoda, as the sister taxon to the clade containing Thescelosaurus and the Iguanodontia...
each of the genera and species that are included in the clade ornithopoda. Ornithopoda is a clade of ornithischian dinosaurs that includes some of the...
This is an incomplete list that briefly describes vertebrates that were extant during the Maastrichtian, a stage of the Late Cretaceous Period which extended...
aquatic animals. Cope had planned to write a monograph about the group Ornithopoda, but never made much progress towards it before his death. This unrealized...
History and Science Bulletin. pp. 67–77. Marsh, O.C. (1894). "The typical Ornithopoda of the American Jurassic". American Journal of Science. 3. 48 (283):...
Kobayashi, Y. and Azuma, Y. (2003). "A new iguanodontian (Dinosauria; Ornithopoda), form the lower Cretaceous Kitadani Formation of Fukui Prefecture, Japan"...
Jacobs, Louis L. (1997). "A new species of Tenontosaurus (Dinosauria: Ornithopoda) from the Early Cretaceous of Texas". Journal of Vertebrate Paleontology...
Riley (July 2011). "New unadorned hadrosaurine hadrosaurid (Dinosauria, Ornithopoda) from the Campanian of North America". Journal of Vertebrate Paleontology...
horns) †Pachyrhinosaurini (mostly had nasal bosses instead of horns) †Ornithopoda (various sizes; bipeds and quadrupeds; evolved a method of chewing using...
"Huehuecanauhtlus tiquichensis, a new hadrosauroid dinosaur (Ornithischia: Ornithopoda) from the Santonian (Late Cretaceous) of Michoacán, Mexico". Canadian...
Sues, Hans-Dieter; Witmer, Larry M.; Coria, Rodolfo A. (2004). "Basal Ornithopoda". In Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (eds.). The...
Molnar, R.E. (1981). "Muttaburrasaurus: a new Iguanodontid (Ornithischia:Ornithopoda) dinosaur from the Lower Cretaceous of Queensland". Memoirs of the Queensland...
Prieto-Márquez, Alberto (2010). "Global phylogeny of Hadrosauridae (Dinosauria: Ornithopoda) using parsimony and Bayesian methods". Zoological Journal of the Linnean...
(30 September 2009). "Osteology of Zalmoxes shqiperorum (Dinosauria, Ornithopoda), based on new specimens from the Upper Cretaceous of Nalat-Vad (Romania)"...
F.; Xu, X. (2014). "A New Basal Hadrosauroid Dinosaur (Dinosauria: Ornithopoda) with Transitional Features from the Late Cretaceous of Henan Province...
pachycephalosaurs, ceratopsians and ornithopods Cerapoda is divided into two groups: Ornithopoda ("bird-foot") and Marginocephalia ("fringed heads"). The latter group...
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