PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Ouranosaurus

Reptilia

Taxonomy

Ouranosaurus was named by Taquet (1972) [Nomen nudum in this paper; formally named in Taquet 1976].

It was assigned to Lambeosauria by Horner (1990); to Iguanodontoidea by Norman (1984), Congleton et al. (1992), Norman (2004) and Paul (2008); to Iguanodontia by Galton (2009); to Hadrosauriformes by You et al. (2005) and McDonald et al. (2010); to Hadrosauroidea by Sereno (1986), Sereno (1997), Sereno (1998), Sereno (1999), You et al. (2003), Prieto-Márquez et al. (2006) and McDonald et al. (2010); to Iguanodontidae by Taquet (1972), Taquet (1975), Taquet (1976), Taquet (1977), Taquet (1977), Buffetaut et al. (1980), Molnar (1980), Bartholomai and Molnar (1981), Taquet (1982), Santafé et al. (1982), Weishampel and Weishampel (1983), Taquet (1984), Milner and Norman (1984), Bonaparte (1986), Casanovas et al. (1987), Carroll (1988), Norman (1989), Norman and Weishampel (1990), Norman (1990), Molnar (1992), Jacobs et al. (1996), Vickaryous and Ryan (1997), Godefroit et al. (1998), Kobayashi and Azuma (2003), You et al. (2003), Ruiz-Omeñaca et al. (2007), Taquet (2010) and Wang et al. (2011); to Neoiguanodontia by Norman (2014); to Styracosterna by Salisbury et al. (2016); to Ankylopollexia by Fanti et al. (2016); and to Hadrosauroidea by Verdú et al. (2021).

Species

O. nigeriensis

Synonymy list

Year	Name and author
1972	Ouranosaurus Taquet p. 56
1975	Ouranosaurus Taquet p. 507
1976	Ouranosaurus Taquet p. 58
1977	Ouranosaurus Taquet p. 8
1980	Ouranosaurus Buffetaut et al. p. 201
1980	Ouranosaurus Molnar p. 137
1981	Ouranosaurus Bartholomai and Molnar p. 343
1982	Ouranosaurus Santafé et al. p. 105
1982	Ouranosaurus Taquet p. 651
1983	Ouranosaurus Weishampel and Weishampel p. 44
1984	Ouranosaurus Milner and Norman p. 146
1984	Ouranosaurus Norman pp. 342-344 fig. 7
1984	Ouranosaurus Taquet p. 82
1986	Ouranosaurus Bonaparte p. 84
1986	Ouranosaurus Sereno
1987	Ouranosaurus Casanovas et al. p. 102
1988	Ouranosaurus Carroll
1989	Ouranosaurus Norman p. 61 fig. 1
1990	Ouranosaurus Horner pp. 184-185
1990	Ouranosaurus Norman p. 153 fig. 11.7
1990	Ouranosaurus Norman and Weishampel p. 529 fig. 25.36
1992	Ouranosaurus Congleton et al. p. 217
1992	Ouranosaurus Molnar p. 266
1996	Ouranosaurus Jacobs et al. p. 605
1997	Ouranosaurus Sereno p. 440 fig. 2
1997	Ouranosaurus Vickaryous and Ryan p. 490
1998	Ouranosaurus Godefroit et al. p. 50 fig. 38
1998	Ouranosaurus Sereno p. 67 fig. 5
1999	Ouranosaurus Sereno p. 2138 fig. 2
2003	Ouranosaurus Kobayashi and Azuma p. 172
2003	Ouranosaurus You et al. p. 152 fig. 3
2003	Ouranosaurus You et al. p. 351 fig. 3
2004	Ouranosaurus Norman p. 417
2005	Ouranosaurus You et al. p. 789 fig. 4
2006	Ouranosaurus Prieto-Márquez et al. p. 938
2007	Ouranosaurus Ruiz-Omeñaca et al. p. 9
2008	Ouranosaurus Paul p. 201
2009	Ouranosaurus Galton p. 215
2010	Ouranosaurus McDonald et al. p. 33 fig. 39
2010	Ouranosaurus McDonald et al. p. 808 fig. 10
2010	Ouranosaurus Taquet p. 95
2011	Ouranosaurus Wang et al. p. 155 fig. 11
2014	Ouranosaurus Norman p. 37 fig. 2.30
2016	Ouranosaurus Fanti et al. p. 267
2016	Ouranosaurus Salisbury et al. p. 126
2021	Ouranosaurus Verdú et al. p. 10 fig. 9

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida

Rank	Name	Author
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Ornithischia	()
—	Genasauria
—	Cerapoda
—	Ornithopoda	()
—	Clypeodonta
—	Iguanodontia	()
—	Dryomorpha
—	Ankylopollexia
—	Neoiguanodontia
genus	Ouranosaurus

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. †Ouranosaurus Taquet 1972

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†Ouranosaurus nigeriensis Taquet 1972

Diagnosis

Reference	Diagnosis
G. S. Paul 2008	As for the type and only known species.

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:

3000 kgg

Minimum body mass:

1000 kgg

Architecture:

compact or denseo

Ontogeny:

accretion, modification of partso

Grouping:

gregariouso

Environment:

terrestrialo

Locomotion:

actively mobileo

Life habit:

ground dwellingo

Diet:

herbivoresubo

Reproduction:

oviparouso

Dispersal:

direct/internalo

Dispersal 2:

mobileo

Created:

2005-08-25 05:57:29

Modified:

2005-08-25 07:57:29

Source: g = genus, subo = suborder, o = order

References: Marsh 1875, Peczkis 1995, Benton 1983

Age range: base of the Late/Upper Aptian to the top of the Maastrichtian or 122.46000 to 66.00000 Ma

Collections (8 total)

Time interval	Ma	Country or state	Original ID and collection number
Aptian	125.0 - 113.0	Niger (Agadez)	O. nigeriensis (37200 182953)
Aptian - Albian	125.0 - 100.5	Cameroon (Nord)	O. sp. (38918 99706)
Late/Upper Aptian	122.46 - 113.0	Niger (Agadez)	O. nigeriensis (77189)
Albian	113.0 - 100.5	Niger (Agadez)	Iguanodon sp. (28569)
Albian	113.0 - 100.5	Tunisia (Tataouine)	Iguanodon sp. (25363)
Campanian - Maastrichtian	83.6 - 66.0	Sudan (Ash Shamaliyah)	O. sp. (38682)