This list of dinosaurs is a comprehensive listing of all genera that have ever been included in the superorder Dinosauria, excluding class Aves (birds, both living and those known only from fossils) and purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomen dubium), or were not formally published (nomen nudum), as well as junior synonyms of more established names, and genera that are no longer considered dinosaurs. Many listed dinosaurs have since been reclassified as everything from birds to crocodilians to petrified wood. The list contains 1237 names, of which approximately 833 are considered either valid dinosaur genera or nomina dubia.
There is no official, canonical list of dinosaur genera. The closest is the Dinosaur Genera List, compiled by biological nomenclature expert George Olshevsky, which was first published online in 1995 and is regularly updated. The most authoritative general source in the field is the second (2004) edition of The Dinosauria. The vast majority of citations are based on Olshevsky's list, and all subjective determinations (such as junior synonymy or non-dinosaurian status) are based on The Dinosauria, except where they conflict with primary literature. These exceptions are noted.
Junior synonym: A name which describes the same taxon as a previously published name. If two or more genera are formally designated and the type specimens are later assigned to the same genus, the first to be published (in chronological order) is the senior synonym, and all other instances are junior synonyms. Senior synonyms are generally used, except by special decision of the ICZN (see Tyrannosaurus), but junior synonyms cannot be used again, even if deprecated. Junior synonymy is often subjective, unless the genera described were both based on the same type specimen.
Nomen nudum (Latin for "naked name"): A name that has appeared in print but has not yet been formally published by the standards of the ICZN. Nomina nuda (the plural form) are invalid, and are therefore not italicized as a proper generic name would be. If the name is later formally published, that name is no longer a nomen nudum and will be italicized on this list. Often, the formally published name will differ from any nomina nuda that describe the same specimen.
Nomen oblitum (Latin for "forgotten name"): A name that has not been used in the scientific community for more than fifty years after its original proposal.
Preoccupied name: A name that is formally published, but which has already been used for another taxon. This second use is invalid (as are all subsequent uses) and the name must be replaced. Preoccupied names are not valid generic names.
Nomen dubium (Latin for "dubious name"): A name describing a fossil with no unique diagnostic features. As this can be an extremely subjective and controversial designation (see Hadrosaurus), this term is not used on this list.
An obscure genus from an unknown family, represented by a single humerus, now lost. It has been misspelled several ways in the scientific literature, with multiple dates given to the year of description as well.
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^Zhang Xingliao; et al. (2009). "A New Sauropod Dinosaur from the Late Cretaceous Gaogou Formation of Nanyang, Henan Province". Acta Geologica Sinica83: 212. doi:10.1111/j.1755-6724.2009.00032.x.
^Peter J. Makovicky, Daqing Li, Ke-Qin Gao, Matthew Lewin, Gregory M. Erickson & Mark A. Norell: A giant ornithomimosaur from the Early Cretaceous of China. Proceedings of the Royal Society B: Biological Sciences, Abstract
^Worth, G. (Ed.). N.d. Chondrosteus. In: The Dinosaur Encyclopedia. Retrieved March 16, 2009. Attributes misspelling to Huene, F. von. 1907–1908. Die Dinosaurier der europaischen Triasformation mit Beriicksichtigung der aussereuropaischen Vorkominnisse. Geol. Paleontol. Abhandl. Suppl. 1, pp. 1–419.
^Lu Junchang; Li Tianguang; Zhong Shimin; Ji Qiang; and Li Shaoxue (2008). "A new mamenchisaurid dinosaur from the Middle Jurassic of Yuanmou, Yunnan Province, China". Acta Geologica Sinica82 (1): 17–26.
^Hans-Dieter Sues, and Alexander Averianov: A new basal hadrosauroid dinosaur from the Late Cretaceous of Uzbekistan and the early radiation of duck-billed dinosaurs. Proceedings of the Royal Society B: Biological Sciences, Abstract
^Mateus, Octávio; Maidment, Susannah C.R.; Christiansen, Nicolai A. (2009). "A new long-necked 'sauropod-mimic' stegosaur and the evolution of the plated dinosaurs". Proceedings of the Royal Society B: Biological Sciences276: 1815. doi:10.1098/rspb.2008.1909.
^Henderson (2005). "Nano No More: The death of the pygmy tyrant." In: "The origin, systematics, and paleobiology of Tyrannosauridae”, a symposium hosted jointly by Burpee Museum of Natural History and Northern Illinois University.
^Filippi, L.S.; and Garrido, A.C. (2008). "Pitekunsaurus macayai gen. et sp. nov., new titanosaur (Saurischia, Sauropoda) from Upper Cretaceous Neuquén Basin, Argentina". Ameghiniana45 (3): 575–590.
^Chiappe, Luis M.; Dyke, Gareth J. (2006). "The Early Evolutionary History of Birds". Journal of the Paleontological Society of Korea22 (1): 133–151.
^Buffetaut, E.; Suteethorn, V.; Tong, H.; and Amiot, R. (2008). Geological Magazine. 145. pp. 745–748.
^Canudo, J. I., Royo-Torres, R. & Cuenca-Bescós, G. (2007) "A new Titanosauriformes sauropod: Tastavinsaurus sanzi gen. et sp. nov. from the Early Cretaceous (Aptian) of Spain". Journal of Vertebrate Paleontology
^Worth, G. (Ed.). N.d. Tenchisaurus. In: The Dinosaur Encyclopedia. Retrieved March 16, 2009. Attributes misspelling to a Japanese guide to a Chinese dinosaur exhibit, 1981. And also to Glut, 1982.
^Daqing Li, Mark A. Norell, Ke-Qin Gao, Nathan D. Smith, and Peter J. Makovicky: A longirostrine tyrannosauroid from the Early Cretaceous of China. Proceedings of the Royal Society B: Biological Sciences, Abstract