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Camptosaurus dispar

Reptilia

Taxonomy
Camptonotus dispar was named by Marsh (1879). Its type specimen is YPM 1877, a partial skeleton, and it is a 3D body fossil. Its type locality is Quarry 13, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian crevasse splay sandstone/claystone in the Morrison Formation of Wyoming.

It was misspelled as Comptonotus dispar by Boulenger (1881) and Gegenbaur (1898); it was recombined as Camptosaurus dispar by Sauvage (1880), Marsh (1885), Zittel (1890), Winkler (1893), Marsh (1894), Marsh (1896), Marsh (1897), Knight (1900), Nopcsa (1901), Mansel-Pleydell (1902), Hay (1902), Nopcsa (1902), Mook (1916), Lull (1924), Gilmore (1925), Perrier (1928), Hay (1930), Young (1944), Tatarinov (1964), Kuhn (1964), Taquet (1975), Jurcsak and Popa (1979), Galton (1980), Galton and Powell (1980), McIntosh (1981), Bartholomai and Molnar (1981), McGinnis (1982), Galton (1982), Weishampel and Weishampel (1983), Weishampel and Bjork (1989), Norman and Weishampel (1990), Thulborn (1990), Weishampel et al. (1991), Weishampel and Heinrich (1992), Chure et al. (1994), Godefroit et al. (1998), Wright (1999), Casanovas et al. (1999), Lockley and Wright (2001), Buchholz (2002), Norman (2004), Mateus (2006), Chure et al. (2006), Pereda Suberbiola et al. (2006), Hübner and Rauhut (2007), Ruiz-Omeñaca et al. (2007), Brill and Carpenter (2007), Galton (2007), Carpenter and Wilson (2008), Butler et al. (2008), Ruiz-Omeñaca et al. (2008), Pascual-Arribas et al. (2009), Galton (2009), Gierlinski et al. (2009), Ruiz-Omeñaca et al. (2010), McDonald et al. (2010), McDonald et al. (2010), McDonald et al. (2010), McDonald (2011), Barrett and Maidment (2011), Diedrich (2011), Wang et al. (2011), McDonald (2012), Zheng et al. (2013), Ibiricu et al. (2014), McDonald et al. (2014), Dieudonné et al. (2016), Becerra et al. (2016), Fuentes Vidarte et al. (2016), Dieudonné et al. (2016), Godefroit et al. (2017), Carpenter and Galton (2018), Herne et al. (2018), Bell et al. (2018), Madzia et al. (2018), Herne et al. (2019), Bell et al. (2019), Párraga and Prieto-Márquez (2019), Castanera et al. (2020), Dieudonné et al. (2020), Sánchez-Fenollosa et al. (2021), Rotatori et al. (2022) and Sánchez-Fenollosa et al. (2022).

Synonyms
Synonymy list
YearName and author
1878Symphyrophus musculosus Cope
1878Brachyrophus altarkansanus Cope pp. 390-391
1879Camptonotus dispar Marsh
1880Camptosaurus dispar Sauvage p. 523
1881Comptonotus dispar Boulenger p. 8
1885Camptosaurus dispar Marsh p. 169
1890Camptosaurus dispar Zittel p. 755
1893Camptosaurus dispar Winkler p. 113
1894Camptosaurus dispar Marsh
1894Camptosaurus medius Marsh
1894Camptosaurus nanus Marsh
1894Camptosaurus medius Marsh p. 85
1894Camptosaurus nanus Marsh p. 85
1896Camptosaurus dispar Marsh p. 196
1896Camptosaurus medius Marsh p. 196
1896Camptosaurus nanus Marsh p. 196
1897Camptosaurus medius Marsh p. 502
1897Camptosaurus dispar Marsh p. 503
1898Camptonotus dispar Gegenbaur p. 577
1900Camptosaurus dispar Knight p. 384
1900Camptosaurus nanus Walcott p. 23
1901Symphyrophus musculosus Nopcsa p. 207
1901Camptosaurus dispar Nopcsa p. 210
1901Camptosaurus medius Nopcsa p. 210
1901Camptosaurus nanus Nopcsa p. 210
1902Symphyrophus musculosus Hay p. 484
1902Camptosaurus dispar Hay p. 501
1902Camptosaurus medius Hay p. 501
1902Camptosaurus nanus Hay p. 501
1902Brachyrophus altarkansanus Hay p. 506
1902Camptosaurus dispar Mansel-Pleydell p. lxxxiii
1902Camptosaurus dispar Nopcsa p. 152
1902Camptosaurus medius Nopcsa p. 152
1902Camptosaurus nanus Nopcsa p. 152
1909Camptosaurus medius Gilmore p. 278
1909Camptosaurus nanus Gilmore p. 280
1909Camptosaurus browni Gilmore pp. 295-297
1916Symphyrophus musculosus Mook p. 136
1916Camptosaurus dispar Mook p. 145
1916Camptosaurus medius Mook p. 146
1916Camptosaurus nanus Mook p. 146
1916Camptosaurus browni Mook p. 147
1916Brachyrophus altarkansanus Mook p. 148
1919Symphyrophus musculosus Osborn and Mook p. 383
1919Brachyrophus altarkansanus Osborn and Mook p. 390
1919Symphyrophus musculosus Osborn and Mook p. 390
1924Camptosaurus browni Lull p. 269
1924Camptosaurus dispar Lull p. 269
1924Camptosaurus nanus Lull p. 269
1925Camptosaurus medius Gilmore p. 385
1925Camptosaurus browni Gilmore p. 388
1925Camptosaurus dispar Gilmore p. 388
1925Camptosaurus nanus Gilmore p. 392
1928Camptosaurus dispar Perrier p. 3087
1930Symphyrophus musculosus Hay p. 193
1930Brachyrophus altarkansanus Hay p. 201
1930Camptosaurus browni Hay p. 205
1930Camptosaurus dispar Hay p. 205
1930Camptosaurus medius Hay p. 205
1930Camptosaurus nanus Hay p. 205
1940Camptosaurus medius Avinoff p. 31
1944Camptosaurus browni Young p. 193
1944Camptosaurus medius Young p. 194
1944Camptosaurus dispar Young p. 195
1948Camptosaurus browni Young p. 284
1949Camptosaurus medius Stokes p. 9
1951Camptosaurus medius Kay p. 91
1954Camptosaurus medius Untermann and Untermann p. 90
1964Camptosaurus browni Kuhn p. 9
1964Camptosaurus dispar Kuhn p. 9
1964Camptosaurus medius Kuhn p. 9
1964Camptosaurus nanus Kuhn p. 9
1964Camptosaurus dispar Tatarinov p. 557
1970Symphyrophus musculosus Steel p. 82
1975Camptosaurus dispar Taquet p. 503
1975Camptosaurus nanus Taquet p. 503
1978Camptosaurus medius Madsen Jr. and Stokes p. 69
1979Camptosaurus dispar Jurcsak and Popa p. 53
1980Camptosaurus dispar Galton
1980Camptosaurus dispar Galton and Powell pp. 437-438
1981Camptosaurus dispar Bartholomai and Molnar p. 343
1981Camptosaurus dispar McIntosh p. 30
1981Camptosaurus medius McIntosh p. 30
1982Camptosaurus dispar Galton p. 144
1982Camptosaurus medius McGinnis p. 76
1982Camptosaurus dispar McGinnis p. 77
1982Camptosaurus nanus McGinnis p. 77
1983Camptosaurus dispar Weishampel and Weishampel p. 44
1989Camptosaurus browni Frances and Sanz p. 141
1989Camptosaurus dispar Weishampel and Bjork p. 64
1990Camptosaurus dispar Norman and Weishampel p. 530
1990Camptosaurus medius Thulborn p. 189
1990Camptosaurus dispar Thulborn p. 190
1991Camptosaurus dispar Weishampel et al. p. 203
1992Camptosaurus dispar Weishampel and Heinrich p. 171
1994Camptosaurus dispar Chure et al. p. 302
1994Camptosaurus browni Chure et al. p. 307
1997Camptosaurus browni Smith p. 127
1998Camptosaurus dispar Godefroit et al. p. 49
1999Camptosaurus dispar Casanovas et al. p. 348
1999Camptosaurus dispar Wright p. 215
2001Camptosaurus dispar Lockley and Wright p. 431
2002Camptosaurus dispar Buchholz p. 19
2004Camptosaurus dispar Norman p. 415
2006Camptosaurus dispar Chure et al. p. 237
2006Camptosaurus dispar Mateus p. 231
2006Camptosaurus dispar Pereda Suberbiola et al. p. 227
2007Camptosaurus dispar Brill and Carpenter p. 51
2007Camptosaurus dispar Galton p. 39
2007Camptosaurus dispar Hübner and Rauhut p. 376
2007Camptosaurus dispar Ruiz-Omeñaca et al. p. 9
2008Camptosaurus dispar Butler et al. p. 8
2008Camptosaurus dispar Carpenter and Wilson p. 257
2008Camptosaurus dispar Ruiz-Omeñaca et al. p. 61
2009Camptosaurus dispar Galton p. 215
2009Camptosaurus dispar Gierlinski et al. p. 231
2009Camptosaurus dispar Pascual-Arribas et al. p. 121
2010Camptosaurus dispar McDonald et al. p. 2
2010Camptosaurus dispar McDonald et al. p. 33 fig. 39
2010Camptosaurus dispar McDonald et al. p. 808 fig. 10
2010Camptosaurus dispar Ruiz-Omeñaca et al. p. 84
2011Camptosaurus dispar Barrett and Maidment p. 404
2011Camptosaurus dispar Diedrich p. 145
2011Camptosaurus dispar McDonald p. 56 figs. 4-5, 7A
2011Camptosaurus dispar Wang et al. p. 147
2012Camptosaurus dispar McDonald p. 2
2013Camptosaurus dispar Zheng et al.
2014Camptosaurus dispar Ibiricu et al. p. 404
2014Camptosaurus dispar McDonald et al. p. 63
2016Camptosaurus dispar Becerra et al. p. 560
2016Camptosaurus dispar Dieudonné et al. p. 30
2016Camptosaurus dispar Fuentes Vidarte et al. p. 436
2017Camptosaurus dispar Godefroit et al. p. 6
2018Camptosaurus dispar Bell et al. p. 26
2018Camptosaurus dispar Carpenter and Galton p. 178
2018Camptosaurus dispar Herne et al. p. 15
2018Camptosaurus dispar Madzia et al. p. 971
2019Camptosaurus dispar Bell et al. p. 3
2019Camptosaurus dispar Herne et al. p. 548
2019Camptosaurus dispar Párraga and Prieto-Márquez p. 251
2020Camptosaurus dispar Castanera et al. p. 410
2020Camptosaurus dispar Dieudonné et al.
2021Camptosaurus dispar Sánchez-Fenollosa et al. p. 54
2022Camptosaurus dispar Rotatori et al. p. 126
2022Camptosaurus dispar Sánchez-Fenollosa et al. p. 72

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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()
Romeriida
RankNameAuthor
Diapsida()
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Genasauria
Cerapoda
Ornithopoda()
Clypeodonta
Iguanodontia()
Dryomorpha
Ankylopollexia
genusCamptosaurus
speciesdispar()

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.

Camptosaurus dispar Marsh 1879
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Invalid names: Brachyrophus altarkansanus Cope 1878 [synonym], Camptosaurus browni Gilmore 1909 [synonym], Camptosaurus medius Marsh 1894 [synonym], Camptosaurus nanus Marsh 1894 [synonym], Symphyrophus musculosus Cope 1878 [synonym]
Diagnosis
ReferenceDiagnosis
A. T. McDonald 2011Basal ankylopollexian diagnosed by the following unique combination of characters: scap- ula with triangular acromion process, straight dorsal margin of scapula (Fig. 3A), straight dorsal margin of ilium, dorsal margin of ilium thickens mediolaterally towards M. iliocaudalis platform, postacetabular process of ilium tapers to a point with break in slope along dorsal margin (Fig. 4), prepubic process unexpanded and concave along its dorsal margin (Fig. 5), distal end of ischium forms rounded expansion.
K. Carpenter and P. M. Galton 2018It differs from C. aphanoecetes and the English C. prestwichii in having a large intramaxillary fossa on the medial side of the maxilla; this fossa is the opening into the maxillary sinus. It differs from C. aphanoecetes in having proportionally short cervical centra compared to their height, generally straighter scapular blade, deep ilium, and gently curved preacetabular process, and a ventrally curved ischial shaft. It also differs in having a generally more robust skeleton, but this is partially onto-genetic as seen by comparing the material of the juvenile “C. nanus” with the larger specimens of C. dispar (figure 19).