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

Stegosaurus

Reptilia - Stegosauridae

Synonyms
Synonymy list
YearName and author
1877Stegosaurus Marsh
1877Stegosaurus armatus Marsh
1878Hypsirophus Cope
1878Hypsirophus discurus Cope
1878Hypsirophus Cope p. 389
1878Hypsirophus discurus Cope p. 389
1878Stegosaurus armatus King p. 346
1878Stegosaurus Williston p. 45
1879Hypsirhophus seeleyanus Cope
1880Stegosaurus Marsh p. 259
1881Diracodon Marsh
1881Diracodon laticeps Marsh
1881Stegosaurus Marsh
1881Stegosaurus affinis Marsh
1881Diracodon Marsh p. 421
1881Diracodon laticeps Marsh p. 421
1882Diracodon Sauvage p. 35
1882Stegosaurus Sauvage p. 35
1884Diracodon Dollo p. 298
1884Stegosaurus Dollo p. 298
1884Diracodon Marsh p. 68
1884Stegosaurus Marsh p. 68
1885Stegosaurus Dollo p. 39
1885Diracodon Marsh p. 764
1885Stegosaurus Marsh p. 764
1887Diracodon Marsh p. 416
1887Diracodon laticeps Marsh p. 416
1887Stegosaurus Marsh pp. 416-417
1887Stegosaurus duplex Marsh p. 416
1889Stegosaurus Dollo p. 678
1890Hypsirhophus Zittel p. 726
1890Stegosaurus Zittel p. 744
1890Diracodon Zittel p. 748
1890Diracodon laticeps Zittel p. 748
1890Stegosaurus duplex Zittel p. 748
1892Diracodon Marsh
1892Stegosaurus Marsh
1893Stegosaurus Marsh p. 437
1895Diracodon Marsh
1895Stegosaurus Marsh
1896Diracodon laticeps Marsh p. 193
1896Stegosaurus duplex Marsh p. 193
1896Diracodon Marsh p. 242
1896Stegosaurus Marsh p. 242
1897Stegosaurus Gadow p. 205
1902Stegosaurus Hay p. 495
1902Stegosaurus armatus Hay p. 495
1902Diracodon Hay p. 496
1902Diracodon laticeps Hay p. 496
1902Stegosaurus affinis Hay p. 496
1902Stegosaurus discurus Hay p. 496
1902Stegosaurus duplex Hay p. 496
1902Stegosaurus seeleyanus Hay p. 496
1902Stegosaurus Mansel-Pleydell p. lxxx
1909Hypsirhophus Huene p. 16
1909Diracodon Huene p. 17
1909Stegosaurus Huene p. 17
1911Hypsirhophus von Zittel p. 283
1911Stegosaurus von Zittel p. 293
1911Diracodon von Zittel p. 294
1913Stegosaurus Tornier p. 373
1914Stegosaurus Gilmore p. 101
1914Stegosaurus armatus Gilmore p. 104
1915Stegosaurus Hennig p. 10
1915Stegosaurus armatus Hennig p. 10
1915Hypsirhophus seeleyanus Hennig p. 11
1915Hypsirophus discurus Hennig p. 11
1918Stegosaurus Lambe p. 32
1922Stegosaurus Joleaud p. 63
1924Stegosaurus Lull p. 242
1926Stegosaurus Piveteau p. 36
1928Diracodon Nopcsa p. 185
1928Stegosaurus Nopcsa p. 185
1931Stegosaurus armatus Johnson p. 358
1934Stegosaurus Chakravarti p. 78
1956Stegosaurus Romer p. 634
1958Stegosaurus Hoffstetter and Brun p. 71
1959Stegosaurus Young pp. 7-8
1960Stegosaurus Delair p. 88
1964Stegosaurus Kuhn p. 37
1964Stegosaurus armatus Kuhn p. 37
1964Stegosaurus affinis Kuhn p. 38
1964Stegosaurus discurus Kuhn p. 38
1964Stegosaurus seeleyanus Kuhn p. 38
1964Stegosaurus Tatarinov p. 572
1966Stegosaurus Romer p. 370
1970Stegosaurus Swinton p. 236
1973Wuerhosaurus Dong p. 50
1977Stegosaurus Galton p. 230
1981Wuerhosaurus Galton p. 43
1981Stegosaurus McIntosh p. 35
1983Stegosaurus Dong et al. p. 137
1983Wuerhosaurus Dong et al. p. 137
1983Wuerhosaurus Zhao p. 304
1983Stegosaurus Zhou p. 26
1984Stegosaurus Russell p. 23
1986Stegosaurus Bonaparte p. 84
1986Stegosaurus Sereno
1986Wuerhosaurus Sereno
1986Stegosaurus Zhou p. 36
1986Wuerhosaurus Zhou p. 36
1988Stegosaurus Carroll
1988Wuerhosaurus Carroll
1990Stegosaurus armatus Bakker p. 2
1990Wuerhosaurus Dong p. 262
1990Stegosaurus Galton
1990Wuerhosaurus Galton
1991Stegosaurus Miller et al. p. 40
1992Wuerhosaurus Dong p. 166
1994Wuerhosaurus Dong p. 2174
1996Diracodon laticeps Bakker p. 44
1997Stegosaurus Dodson p. 12
1998Stegosaurus Sereno p. 61
2001Stegosaurus Blows p. 138
2001Wuerhosaurus Blows p. 138
2001Stegosaurus armatus Carpenter and Galton p. 81
2001Hypsirophus discurus Carpenter et al. p. 55
2001Wuerhosaurus Carpenter et al. p. 73 fig. 3.14
2004Stegosaurus Galton and Upchurch p. 345
2004Stegosaurus armatus Galton and Upchurch p. 345
2004Wuerhosaurus Galton and Upchurch p. 345
2006Stegosaurus Chure et al. p. 237
2006Stegosaurus armatus Chure et al. p. 237
2006Stegosaurus Maidment et al. p. 951 fig. 8
2006Hypsirophus discurus Mateus p. 231
2006Stegosaurus armatus Mateus p. 231
2007Stegosaurus Escaso et al. p. 158
2007Stegosaurus armatus Escaso et al. p. 371
2007Stegosaurus Galton p. 24
2007Stegosaurus armatus Galton p. 24
2008Stegosaurus armatus Maidment et al. pp. 377-378
2008Stegosaurus Maidment et al. p. 390 fig. 11
2009Stegosaurus Mateus et al.
2009Stegosaurus armatus Mateus et al.
2010Stegosaurus armatus Billon-Bruyat et al. p. 147
2010Stegosaurus armatus Christiansen and Tschopp p. 165
2010Stegosaurus Mateus and Milàn p. 254
2013Stegosaurus armatus Ruiz-Omeñaca et al. p. 37
2014Diracodon Ulansky p. 5
2014Diracodon laticeps Ulansky p. 5
2014Hypsirophus Ulansky p. 5
2014Hypsirophus discurus Ulansky p. 5
2014Hypsirophus seeleyanus Ulansky p. 5
2014Stegosaurus Ulansky p. 7
2014Stegosaurus armatus Ulansky p. 7
2014Stegosaurus duplex Ulansky p. 7
2014Wuerhosaurus Ulansky p. 8
2014Stegosaurus armatus Ulansky p. 20

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
RankNameAuthor
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Genasauria
Thyreophora()
Stegosauria()
familyStegosauridae
genusStegosaurus

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.

Diagnosis
ReferenceDiagnosis
C. W. Gilmore 1914Skull relatively very small and brain cavity in proportion to size of the body more diminutive than in any other land vertebrate. Supraorbital region composed of two separate bones. Eamus deep and without lateral foramen. Dentition 23+/23. Teeth extremely small and weak. Vertebrae slightly amphicoelus, or with flat ends; dorsals with much elevated neural arches. Neural canal in sacrum enlarged to many times the capacity of the brain. Sacrum and lateral processes entirely roofed over by bone. Anterior caudal vertebra largest in the column. Ulna (in adults) as long as humerus, with large olecranon process. Manus short, pentadactyle. Phalangial formula of digits III and IV apparently reduced. Femur long, straight, fourth trochanter vestigal, with or without lesser trochanter. Tibia having greatest diameter of two ends in the same plane. Pes tetradactyle, digit IV consisting of a vestigal metatarsal, digit V wanting. Dermal armor consisting of two rows of erect, flattened plates extending from back of head to distal fourth of tail. Plates of opposite rows alternating. Four dermal spines near end of tail.
Z.-M. Dong 1994 (Wuerhosaurus)Differs from all other stegosaurs in having only 11 dorsal vertebrae, compared with 16 in Stegosaurus and 17-18 in Huayangosaurus. Neural canal of dorsals small, not enlarged as in Stegosaurus.