| Description | Hypsilophodontidae (or Hypsilophodontia) is a traditionally used family of ornithopod dinosaurs, generally considered invalid today. It historically included taxa from across 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, 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. A 2014 analysis by Norman recovered a grouping of Hypsilophodon, Rhabdodontidae and Tenontosaurus, which he referred to as Hypsilophodontia. All other analyses from around the same time have instead found these latter taxa to be within Iguanodontia.
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| Source Data | |
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| Rank | family |
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| Taxonomy (GBIF) | Life : Animalia : Chordata : Reptilia : Dinosauria : Hypsilophodontidae |
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| Taxonomy (PBDB) | Life : Animalia : Chordata : Ornithischia : Hypsilophodontidae |
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| Taxonomic Status (GBIF) | accepted |
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Classification
(PBDB,GBIF) | |
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| Common Name | hypsilophodontid |
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| Scientific Name | Hypsilophodontidae |
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| Opinions (PBDB) | | Name | Rank | Opinion | Evidence | Author |
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| Hypsilophodontidae | family | belongs to Ornithopoda | stated with evidence | Dollo, 1882 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Dollo, 1884 | | Hypsilophodontidae | family | belongs to Iguanodontia | stated without evidence | Baur, 1891 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Marsh, 1895 | | Hypsilophodontidae | family | belongs to Ornithopodidae | stated without evidence | von Zittel, 1911 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated with evidence | Lull, 1924 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Huene, 1927 | | Hypsilophodontidae | family | belongs to Ornithischia | stated without evidence | Parks, 1935 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Swinton, 1936 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated with evidence | Kuhn, 1946 | | Hypsilophodontidae | family | belongs to Kalodontoidea | stated with evidence | Huene, 1948 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Haughton and Brink, 1954 | | Hypsilophodontidae | family | belongs to Ornithopoda | implied | Romer, 1956 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Parsch, 1963 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated with evidence | Estes, 1964 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Kuhn, 1964 | | Hypsilophodontidae | family | belongs to Ornithopoda | implied | Romer, 1966 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated with evidence | Kuhn, 1966 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Swinton, 1970 | | Hypsilophodontidae | family | belongs to Dolichopoda | stated without evidence | Thulborn, 1974 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Galton, 1974 | | Hypsilophodontidae | family | belongs to Dolichopoda | stated without evidence | Thulborn, 1975 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Galton, 1977 | | Hypsilophodontidae | family | belongs to Ornithischia | stated without evidence | Madsen and Miller, 1979 | | Hypsilophodontidae | family | belongs to Ornithopoda | implied | Benton, 1979 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Bonaparte, 1980 | | Hypsilophodontidae | family | belongs to Hypsilophodontia | stated without evidence | Russell, 1984 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Buscalioni and Sanz, 1984 | | Hypsilophodontidae | family | belongs to Hypsilophodontoidea | stated without evidence | Cooper, 1985 | | Hypsilophodontidae | family | belongs to Hypsilophodontia | stated with evidence | Sereno, 1986 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Bakker, 1986 | | Hypsilophodontidae | family | belongs to Ornithopoda | implied | Carroll, 1988 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Dong, 1989 | | Hypsilophodontidae | family | belongs to Euornithopoda | stated with evidence | Benton, 1990 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated with evidence | Sues and Norman, 1990 | | Hypsilophodontidae | family | belongs to Euornithopoda | stated without evidence | Weishampel and Heinrich, 1992 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Molnar, 1992 | | Hypsilophodontidae | family | belongs to Euornithopoda | stated without evidence | Coria and Salgado, 1996 | | Hypsilophodontidae | family | belongs to Euornithopoda | stated with evidence | Sereno, 1998 | | Hypsilophodontidae | family | belongs to Ornithischia | stated without evidence | Eberth et al., 2001 | | Hypsilophodontidae | family | belongs to Ornithopoda | stated without evidence | Chure et al., 2006 | | Hypsilophodontidae | family | belongs to Hypsilophodontia | stated with evidence | Alifanov and Saveliev, 2014 |
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| Status (PBDB) | extinct |
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| Taxon Size (PBDB) | 8 |
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| First Recorded Appearance | 168 - 165 Ma
Middle Jurassic |
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| Last Recorded Appearance | 70.6 - 66.0 Ma
Late/Upper Cretaceous |
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| Environment | terrestrial (based on Ornithischia) |
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| Motility | actively mobile (based on Ornithischia) |
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| Diet | herbivore (based on Ornithischia) |
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| Reproduction | oviparous, dispersal=direct/internal,mobile (based on Ornithischia) |
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| Ontogeny | accretion,modification of parts (based on Ornithischia) |
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| Taphonomy | hydroxylapatite,compact or dense (based on Ornithischia) |
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| Primary Reference (PBDB) | L. Dollo. 1882. Première note sur les dinosaures de Bernissart [First note on the dinosaurs of Bernissart]. Bulletin du Musée Royale d'Histoire Naturelle de Belgique 1:1-18 |
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| Common Name(s) | Hypsilophodontid |
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| Wikipedia | https://en.wikipedia.org/wiki/Hypsilophodontidae |
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