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Antarctosaurus wichmannianus

Reptilia

Taxonomy
Antarctosaurus wichmannianus was named by Huene (1927) [Nomen vanum in this paper.]. Its type specimen is MACN 6904, a partial skeleton, and it is a 3D body fossil. Its type locality is right bank, Rio Negro (MACN), which is in a Campanian/Campanian terrestrial sandstone/sandstone in the Anacleto Formation of Argentina.

It was synonymized subjectively with Antarctosaurus giganteus by Van Valen (1969); it was corrected as Antarctosaurus whichmannianus by Álvarez et al. (2016).

Synonymy list
YearName and author
1927Antarctosaurus wichmannianus Huene p. 256 figs. Pl. 28-35
1929Antarctosaurus wichmannianus Huene pp. 66-67 figs. Pl. 28-35
1931Antarctosaurus wichmannianus Huene p. 188
1932Antarctosaurus wichmannianus Stromer p. 4
1933Antarctosaurus wichmannianus Rusconi p. 9
1938Antarctosaurus wichmannianus Janensch p. 133
1940Antarctosaurus wichmannianus Lambert p. 22
1941Antarctosaurus wichmannianus Huene p. 90
1941Antarctosaurus wichmannianus Lambert p. 55
1945Antarctosaurus wichmannianus Serra p. 21
1947Antarctosaurus wichmannianus Swinton p. 116
1964Antarctosaurus wishmannianus Tatarinov p. 545
1969Antarctosaurus wichmannianus Casamiquela et al. p. 15
1970Antarctosaurus wichmannianus Steel p. 75
1972Antarctosaurus wichmannianus Mones p. 30
1978Antarctosaurus wichmannianus Bonaparte p. 560
1979Antarctosaurus wichmannianus Bonaparte p. 231
1979Antarctosaurus wichmannianus Bonaparte and Gasparini pp. 400-401
1980Antarctosaurus wichmannianus Bonaparte and Powell p. 26
1982Antarctosaurus wichmannianus Santafé et al. p. 92
1984Antarctosaurus wichmannianus Bonaparte p. 140
1989Antarctosaurus wichmannianus Le Loeuff et al. p. 853
1990Antarctosaurus wichmannianus McIntosh p. 397
1992Antarctosaurus wichmannianus Powell p. 200
1995Antarctosaurus wichmannianus Hunt et al. p. 265
1996Antarctosaurus wichmannianus Bonaparte pp. 107-108 fig. 41
1996Antarctosaurus wichmannianus Chatterjee and Rudra p. 514
1996Antarctosaurus wichmannianus Loyal et al. p. 629
1997Antarctosaurus wichmannianus Mones p. 211
1997Antarctosaurus wichmannianus Novas p. 681
1997Antarctosaurus wichmannianus Salgado and Calvo pp. 36-39 fig. 5
2002Antarctosaurus wichmannianus Lamanna et al. p. 60
2003Antarctosaurus wichmannianus Powell p. 45
2003Antarctosaurus wichmannianus Torcida Fernández-Baldor et al. p. 209
2004Antarctosaurus wichmannianus Upchurch et al. p. 269
2005Antarctosaurus wichmannianus Apesteguía p. 325
2005Antarctosaurus wichmannianus Curry Rogers p. 66
2005Antarctosaurus wichmannianus Gallina and Apesteguía p. 160
2005Antarctosaurus wichmannianus Novas et al. p. 229
2005Antarctosaurus wichmannianus Salgado and Coria p. 440
2006Antarctosaurus wichmannianus Kellner et al. p. 2
2007Antarctosaurus wichmannianus Apesteguía p. 541
2008Antarctosaurus wichmannianus Filippi and Garrido p. 581
2008Antarctosaurus wichmannianus Soto et al. p. 16
2009Antarctosaurus wichmannianus Salgado and Coria p. 12
2009Antarctosaurus wichmannianus Wilson et al. pp. 33-34
2010Antarctosaurus wichmannianus García and Cerda p. 47
2010Antarctosaurus wichmannianus García et al. p. 415
2011Antarctosaurus wichmannianus Díez Díaz et al. p. 522
2012Antarctosaurus wichmannianus Candeiro and Harris p. 74
2012Antarctosaurus wichmannianus Díez Díaz et al. p. 631
2012Antarctosaurus wichmannianus Díez Díaz et al. p. 266
2012Antarctosaurus wichmannianus Mannion and Otero p. 634
2012Antarctosaurus wichmannianus Rubilar-Rogers et al. p. 249
2015Antarctosaurus wichmannianus Gallina and Apesteguía p. 1
2015Antarctosaurus wichmannianus de Jesus Faria et al. p. 157
2016Antarctosaurus wichmannianus Martínez et al. p. 2
2016Antarctosaurus whichmannianus Álvarez et al. p. 5
2018Antarctosaurus wichmannianus Díaz-Martínez et al. p. 207–208
2020Antarctosaurus wichmannianus Páramo et al. p. 379
2021Antarctosaurus wichmannianus Apesteguía et al.
2022Antarctosaurus wichmannianus Navarro et al. p. 327
2022Antarctosaurus wichmanianus Tomaselli et al. p. 14
2023Antarctosaurus wichmannianus Khosla and Lucas p. 723

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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
—Diapsida()
RankNameAuthor
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Sauropoda()
—Gravisauria
—Eusauropoda
—Neosauropoda
—Macronaria
—Titanosauriformes
—Titanosauria
—Lithostrotia
genusAntarctosaurus
specieswichmannianus

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.

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Diagnosis
ReferenceDiagnosis
J. E. Powell 2003High skull at the back, large orbits; wide muzzle, straight and broad symphyseal region perpendicular to the mandibular rami. Parietal and frontal broad, and short. Upper temporal fenestra reduced but partially open towards the dorsal side. Triangular basipresphenoid complex wide and short. Foramen for nerves IX–XI separated from the fenestra ovalis. Basipterygoid process long, in the form of a bar and very divergent. Basioccipital tuberosities separated. Paroccipital processes long and recurved as in Saltasaurus. Narrow scapular blade; wide supraglenoid regions. Axis of the lamina almost perpendicular to the major axis of the supraglenoid part of the scapula. Ischiadic lamina narrow, distally expanded. Well developed pubic peduncle. Tibia with stout articular ends. Fibula with lateral tuberosity formed by two parallel rugosities that are parallel to the long axis of the bone.