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Haplocanthosaurus

Reptilia

Taxonomy
Haplocanthosaurus was named by Hatcher (1903). It is the type genus of Haplocanthosauridae.

It was assigned to Morosauridae by Hatcher (1903); to Camarasaurinae by Nopcsa (1928); to Cardiodontinae by Huene (1927), Huene (1927) and Huene (1929); to Sauropoda by Tatarinov (1964); to Brachiosauridae by Riggs (1904), Williston (1905), Lull (1919), Romer (1966) and Madsen and Miller (1979); to Cetiosaurinae by Romer (1956), Steel (1970) and Coombs and Molnar (1981); to Dicraeosauridae by Bonaparte (1986); to Cetiosaurinae by Kuhn (1939) and McIntosh (1990); to Sauropoda by Upchurch (1997); to Haplocanthosauridae by Bonaparte (1999); to Camarasauridae by Hay (1930), Upchurch (1995), Upchurch (1995), Upchurch et al. (2004) and Zhang et al. (2009); to Neosauropoda by Canudo et al. (2010); to Diplodocoidea by Wilson (2002), Salgado et al. (2006), Remes (2006), Suteethorn et al. (2010), Ksepka and Norell (2010) and Whitlock (2011); to Macronaria by Sereno (1997), Sereno (1998), Wilson and Sereno (1998), Sereno (1999), de Almeida et al. (2004), Gallina and Apesteguía (2005), Royo-Torres et al. (2006) and Carballido et al. (2011); to Cetiosauridae by Huene (1908), Huene (1908), Huene (1909), von Zittel (1911), Lull (1924), Lapparent (1943), Anonymous (1959), Galton (1977), Molnar (1980), McIntosh (1981), Russell (1984), Carroll (1988), McIntosh (1990), Britt and Naylor (1994), McIntosh (1997), Dodson (1997), Chure et al. (2006) and Erickson (2014); to Eusauropoda by Xing et al. (2015); and to Diplodocoidea by Tschopp et al. (2015) and Mannion et al. (2019).

Synonymy list
YearName and author
1903Haplocanthus Hatcher p. 1
1903Haplocanthosaurus Hatcher p. 49
1904Haplocanthosaurus Riggs
1905Haplocanthosaurus Williston p. 345
1908Haplocanthosaurus Huene p. 296
1909Haplocanthosaurus Huene p. 14
1911Haplacanthosaurus von Zittel p. 285
1919Haplocanthosaurus Lull p. 42
1924Haplocanthosaurus Lull p. 234
1927Haplocanthosaurus Huene p. 122
1928Haplocanthosaurus Nopcsa p. 184
1929Haplocanthosaurus Huene p. 115
1930Haplocanthosaurus Hay p. 192
1939Haplocanthosaurus Kuhn p. 86
1943Haplocanthosaurus Lapparent p. 19
1956Haplocanthosaurus Romer p. 620
1959Haplocanthosaurus Anonymous p. 107
1964Haplocanthosaurus Tatarinov p. 552
1966Haplocanthosaurus Romer p. 370
1970Haplocanthosaurus Steel p. 66
1977Haplocanthosaurus Galton p. 230
1979Haplocanthosaurus Madsen and Miller p. 5
1980Haplocanthosaurus Molnar p. 137
1981Haplocanthosaurus Coombs, Jr. and Molnar p. 358
1981Haplocanthosaurus McIntosh p. 11
1984Haplocanthosaurus Russell p. 22
1986Haplocanthosaurus Bonaparte pp. 256-257
1988Haplocanthosaurus Carroll
1990Haplocanthosaurus McIntosh p. 54
1994Haplocanthosaurus Britt and Naylor p. 260
1995Haplocanthosaurus Upchurch p. 253
1997Haplocanthosaurus Dodson p. 11
1997Haplocanthosaurus McIntosh p. 656
1997Haplocanthosaurus Sereno p. 442 fig. 4
1997Haplocanthosaurus Upchurch p. 82A
1998Haplocanthosaurus Sereno p. 71 fig. 7
1998Haplocanthosaurus Wilson and Sereno p. 54 fig. 44
1999Haplocanthosaurus Bonaparte pp. 158-160
1999Haplocanthosaurus Sereno p. 2138 fig. 2
2002Haplocanthosaurus Wilson p. 240 fig. 13
2004Haplocanthosaurus Upchurch et al. p. 266
2004Haplocanthosaurus de Almeida et al. p. 242
2005Haplocanthosaurus Gallina and Apesteguía p. 159 fig. 5
2006Haplocanthosaurus Chure et al. p. 236
2006Haplocanthosaurus Remes p. 664 fig. 9
2006Haplocanthosaurus Royo-Torres et al. p. 1926 fig. 3
2006Haplocanthosaurus Salgado et al. p. 704 fig. 9
2009Haplocanthosaurus Zhang et al. p. 218
2010Haplocanthosaurus Canudo et al.
2010Haplocanthosaurus Ksepka and Norell
2010Haplocanthosaurus Suteethorn et al.
2011Haplocanthosaurus Carballido et al. p. 637
2011Haplocanthosaurus Whitlock
2014Haplocanthosaurus Erickson p. 16
2015Haplocanthosaurus Tschopp et al.
2015Haplocanthosaurus Xing et al.
2019Haplocanthosaurus Mannion et al.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
classReptilia
RankNameAuthor
subclassEureptilia()
Romeriida
Diapsida()
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Sauropoda()
Gravisauria
Eusauropoda
Neosauropoda
Diplodocoidea()
genusHaplocanthosaurus

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. †Haplocanthosaurus Hatcher 1903
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Haplocanthosaurus delfsi McIntosh and Williams 1988
Haplocanthosaurus priscus Hatcher 1903
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Invalid names: Haplocanthosaurus utterbacki Hatcher 1903 [synonym]
Invalid names: Haplocanthus Hatcher 1903 [synonym]
Diagnosis
No diagnoses are available