Hypsilophodontidae (or Hypsilophodontia) is a traditionally used family of ornithopod dinosaurs, generally considered invalid today. It historically included many small bodied bipedal neornithischian taxa from around the world, and spanning from the Middle Jurassic until the Late Cretaceous. This inclusive status was supported by some phylogenetic analyses from the 1990s and mid 2000s,[3][4] although there have also been many finding that the family is an unnatural grouping which should only include the type genus, Hypsilophodon, with the other genera being within clades like Thescelosauridae and Elasmaria.[5][6][7][8][9][10][11][12][13][14][15] A 2014 analysis by Norman recovered a grouping of Hypsilophodon, Rhabdodontidae and Tenontosaurus, which he referred to as Hypsilophodontia.[2] All other analyses from around the same time have instead found these latter taxa to be within Iguanodontia.[12][16]
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and 30 Related for: Hypsilophodontidae information
Hypsilophodontidae (or Hypsilophodontia) is a traditionally used family of ornithopod dinosaurs, generally considered invalid today. It historically included...
Although Hypsilophodontidae was interpreted as a natural group in the early 1990s, this hypothesis has fallen out of favor and Hypsilophodontidae has been...
Hypsilophodon to the Iguanodontidae. In 1882 Louis Dollo named a separate Hypsilophodontidae. By the middle of the twentieth century that had become the accepted...
on all fours. The taxonomy of dinosaurs previously ascribed to the Hypsilophodontidae is problematic. The group previously consisted of all non-iguanodontian...
a basal iguanodont ornithopod that was originally assigned to the Hypsilophodontidae in 1999. Today, this is understood to be an unnatural (paraphyletic)...
alongside Hypsilophodon, accounting for the paraphyletic nature of Hypsilophodontidae. A 2017 study which named and described Burianosaurus noted that the...
assigned to the subfamily were often considered part of Hypsilophodontidae. Hypsilophodontidae is now considered obsolete, and its former members have...
assigned to Hypsilophodontidae by its describers, the original classification of Atlascoposaurus was considered untenable given that Hypsilophodontidae has been...
considered it to be a light, agile creature, and assigned it to the Hypsilophodontidae, a family of small bipedal dinosaurs. Other remains of similar animals...
Norman and colleagues (2004), in the framework of a paraphyletic Hypsilophodontidae, found it to be the sister taxon to Thescelosaurus, and Richard Butler...
basal euornithopod groups such as the Camptosauridae, Dryosauridae or Hypsilophodontidae. Studies by Andrew McDonald indicate a position in the Rhabdodontidae...
Notohypsilophodon was an iguanodont, and instead assigned it to the more basal Hypsilophodontidae, which made it at the time the only South American hypsilophodont...
Galton. 1980. "European Jurassic ornithopod dinosaurs of the families Hypsilophodontidae and Camptosauridae". Neues Jahrbuch für Geologie und Paläontologie...
to various families. Nopcsa (1901) also had referred the genus to Hypsilophodontidae, and he suggested affinities with Camptosaurus in 1902, 1904 and 1915...
to be a strong runner. He assigned the genus Gongbusaurus to the Hypsilophodontidae, a paraphyletic grade of small herbivorous bipedal dinosaurs. Because...
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