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Hypsilophodon

Reptilia

Taxonomy
Hypsilophodon was named by Huxley (1870). Its type is Hypsilophodon foxii. It is the type genus of Hypsilophodontidae, Camptonotidae, Hypsilophodontinae, Hypsilophontidae, Hypsilophodontoidea.

It was synonymized subjectively with Iguanodon by Owen (1874).

It was assigned to Ornithoscelida by Williston (1878); to Camptonotidae by Sauvage (1882), Marsh (1882) and Marsh (1884); to Camptosauridae by Marsh (1885) and Zittel (1890); to Ornithopoda by Quenstedt (1882) and Gadow (1897); to Hypsilophodontidae by Nopcsa (1901); to Iguanodontidae by Huxley (1870), Lydekker (1888), Lydekker (1888) and Mansel-Pleydell (1902); to Kalodontidae by Nopcsa (1902); to Nanosauridae by Huene (1909); to Hypsilophontidae by von Zittel (1911); to Laosauridae by Huene (1914); to Orthopoda by Joleaud (1922); to Hypsilophodontinae by Nopcsa (1928) and Sternberg (1940); to Hypsilophodontia by Norman (1989); to Euornithopoda by Norman et al. (2004), Pereda Suberbiola et al. (2006) and Galton (2009); to Ornithopoda by Winkler (1893), Marsh (1894), Gadow (1898), Gadow (1901), Butler et al. (2007) and Godefroit et al. (2009); to Ornithopoda by Butler et al. (2008) and Han et al. (2012); to Hypsilophodontidae by Dollo (1882), Dollo (1884), Marsh (1895), Marsh (1896), Gilmore (1915), Lull (1924), Parks (1926), Swinton (1936), Swinton (1936), Romer (1956), Parsch (1963), Tatarinov (1964), Kuhn (1964), Simmons (1965), Romer (1966), Thulborn (1970), Swinton (1970), Thulborn (1970), Thulborn (1971), Galton (1972), Galton and Jensen (1973), Galton and Jensen (1973), Galton (1973), Thulborn (1974), Galton (1974), Galton (1974), Thulborn (1975), Bonaparte (1978), Madsen and Miller (1979), Galton and Jensen (1979), Sues (1980), Molnar (1980), Colbert (1981), Sues and Galton (1982), Weishampel and Weishampel (1983), Zhao (1983), Buscalioni and Sanz (1984), Milner and Norman (1984), Norman (1984), Russell (1984), Cooper (1985), Sereno (1986), Buscalioni and Sanz (1987), Sanz et al. (1987), Carroll (1988), Hutt et al. (1989), Galton (1989), Benton (1990), Sues and Norman (1990), Weishampel and Heinrich (1992), Carpenter (1994), Torres and Viera (1994), Sues (1997), Eberth (1997), Winkler et al. (1997), Sereno (1998), Blows (1998), Naish and Martill (2001), Ruiz-Omeñaca and Canudo (2003), Stanford et al. (2004), Sánchez-Hernández et al. (2007), Mateus and Milàn (2010) and Alifanov and Saveliev (2014); to Clypeodonta by Madzia et al. (2018) and Herne et al. (2019); and to Hypsilophodontidae by Buchholz (2002) and Dieudonné et al. (2020).

Species
H. foxii (type species)

Synonymy list
YearName and author
1870Hypsilophodon Huxley p. 7 figs. Pl. 1-2
1878Hypsilophodon Williston p. 45
1882Hypsilophodon Dollo
1882Hypsilophodon Marsh
1882Hypsilophodon Quenstedt p. 188
1882Hypsilophodon Sauvage p. 35
1884Hypsilophodon Dollo p. 298
1884Hypsilophodon Marsh p. 68
1885Hypsilophodon Marsh p. 764
1888Hypsilophodon Lydekker p. 46
1890Hypsilophodon Zittel p. 756
1893Hypsilodon Winkler p. 111
1894Hypsilophodon Marsh
1895Hypsilophodon Marsh
1896Hypsilophodon Marsh p. 244
1897Hypsilophodon Gadow p. 205
1898Hypselophodon Gadow p. 22
1901Hypsilophodon Gadow p. 427
1901Hypsilophodon Nopcsa p. 209
1902Hypsilophodon Mansel-Pleydell p. lxxxiii
1902Hypsilophodon Nopcsa p. 151
1909Hypsilophodon Huene p. 16
1911Hypsilophodon von Zittel p. 289
1914Hypsilophodon Huene p. 41
1915Hypsilophodon Gilmore pp. 612-613
1922Hypsilophodon Joleaud p. 62
1924Hypsilophodon Lull p. 238
1926Hypsilophodon Parks p. 4
1928Hypsilophodon Nopcsa p. 184
1936Hypsilophodon Swinton p. 212
1940Hypsilophodon Sternberg p. 493
1956Hypsilophodon Romer p. 628
1963Hypsilophodon Parsch p. 6
1964Hypsilophodon Kuhn p. 6
1964Hypsilophodon Tatarinov p. 555
1965Hypsilophodon Simmons p. 68
1966Hypsilophodon Romer p. 370
1970Hypsilophodon Swinton p. 197
1970Hypsilophodon Thulborn p. 244
1971Hypsilophodon Thulborn p. 77 fig. 4
1972Hypsilophodon Galton p. 465
1973Hypsilophodon Galton p. 17
1973Hypsilophodon Galton and Jensen p. 131
1974Hypsilophodon Galton p. 18
1974Hypsilophodon Thulborn p. 171
1975Hypsilophodon Thulborn p. 99
1978Hypsilophodon Bonaparte p. 566
1979Hypsilophodon Galton and Jensen p. 1
1979Hypsilophodon Madsen and Miller p. 5
1980Hypsilophodon Molnar p. 137
1980Hypsilophodon Sues p. 70
1981Hypsilophodon Colbert p. 50
1982Hypsilophodon Sues and Galton p. 187
1983Hypsilophodon Weishampel and Weishampel p. 44
1983Hypsilophodon Zhao p. 304
1984Hypsilophodon Buscalioni and Sanz p. 13
1984Hypsilophodon Milner and Norman p. 146
1984Hypsilophodon Norman pp. 342-344 fig. 7
1984Hypsilophodon Russell p. 23
1985Hypsilophodon Cooper p. 293
1986Hypsilophodon Sereno
1987Hypsilophodon Buscalioni and Sanz p. 66
1987Hypsilophodon Sanz et al. p. 62
1988Hypsilophodon Carroll
1989Hypsilophodon Galton p. 218
1989Hypsilophodon Hutt et al. p. 145
1989Hypsilophodon Norman p. 63
1990Hypsilophodon Benton p. 26
1990Hypsilophodon Sues and Norman p. 500
1992Hypsilophodon Weishampel and Heinrich p. 163
1994Hypsilophodon Carpenter p. 290
1994Hypsilophodon Torres and Viera p. 5
1997Hypsilophodon Eberth p. 202
1997Hypsilophodon Sues p. 357
1997Hypsilophodon Winkler et al. p. 345 fig. 19
1998Hypsilophodon Blows p. 32
1998Hypsilophodon Sereno p. 61
2001Hypsilophodon Naish and Martill p. 67
2002Hypsilophodon Buchholz p. 21
2003Hypsilophodon Ruiz-Omeñaca and Canudo p. 293
2004Hypsilophodon Norman et al. p. 395
2004Hypsilophodon Stanford et al. p. 257
2006Hypsilophodon Pereda Suberbiola et al. p. 227
2007Hypsilophodon Butler et al. p. S18 fig. S2
2007Hypsilophodon Sánchez-Hernández et al. p. 202
2008Hypsilophodon Butler et al. p. 21 figs. 2-4
2009Hypsilophodon Galton p. 214
2009Hypsilophodon Godefroit et al.
2010Hypsilophodon Mateus and Milàn p. 254
2012Hypsilophodon Han et al. p. 1391 fig. 14
2014Hypsilophodon Alifanov and Saveliev p. 419
2018Hypsilophodon Madzia et al. p. 973 fig. 4
2019Hypsilophodon Herne et al. p. 574 fig. 25
2020Hypsilophodon Dieudonné et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
RankNameAuthor
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Cerapoda
—Ornithopoda()
—Clypeodonta
—Hypsilophodontidae()
genusHypsilophodon

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Hypsilophodon Huxley 1870
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†Hypsilophodon foxii Huxley 1870
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yesg
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Maximum body mass: 100 kgg
Minimum body mass: 30 kgg
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: gregariouso
Environment: terrestrialg
Locomotion: actively mobileg
Life habit: ground dwellingg
Diet: herbivoreg
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2005-08-25 06:00:48
Modified: 2005-12-28 16:45:08
Source: g = genus, o = order
References: Marsh 1875, Peczkis 1995

Age range: base of the Kimmeridgian to the top of the Late/Upper Barremian or 157.30000 to 125.45000 Ma

Collections (8 total)


Time interval Ma Country or state Original ID and collection number
Kimmeridgian - Tithonian157.3 - 145.0Spain (Aragón) H. sp. (36366)
Berriasian145.0 - 139.8Romania (Judetul Bihor) Thescelosaurus sp. (13335)
Early/Lower Cretaceous145.0 - 100.5Japan (Gifu) H. sp. (202247)
Early/Lower Barremian130.0 - 125.45Spain (Aragón) H. sp. (28196)
Late/Upper Barremian130.0 - 125.45United Kingdom (England) Iguanodon mantelli, Iguanodon sp. (26791)
Late/Upper Barremian - Early/Lower Aptian130.0 - 122.46Spain (Castilla y Leon) H. sp. (89283)
Late/Upper Barremian - Early/Lower Aptian130.0 - 122.46United Kingdom (England) H. sp. (13268)
Barremian129.4 - 125.0United Kingdom (England) H. foxii (22687)