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Maxakalisaurus topai

Osteichthyes

Taxonomy
Maxakalisaurus topai was named by Kellner et al. (2006). Its type specimen is MN 5013-V, a set of postcrania, and it is a 3D body fossil. Its type locality is Sierra de Boa Vista, which is in a Campanian/Maastrichtian fluvial sandstone/conglomerate in the Adamantina Formation of Brazil. It was considered monophyletic by Kellner et al. (2006).

Synonymy list
YearName and author
2006Maxakalisaurus topai Kellner et al. pp. 5-6 figs. 2-27
2009Maxakalisaurus topai D'Emic et al. p. 168
2010Maxakalisaurus topai Candeiro et al. p. 242
2011Maxakalisaurus topai Bittencourt and Langer p. 33
2011Maxakalisaurus topai Marinho and Iori p. 340
2011Maxakalisaurus topai Martinelli et al. p. 35
2012Maxakalisaurus topai Díez Díaz et al. p. 266
2012Maxakalisaurus topai Mannion and Otero p. 634
2015Maxakalisaurus topai de Jesus Faria et al. p. 155
2016Maxakalisaurus topai Moreira-Machado and Candeiro p. 26
2022Maxakalisaurus topai Navarro et al. p. 333

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
RankNameAuthor
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Sauropodomorpha(Huene 1932)
—Massopoda
—Sauropodiformes
—Sauropoda()
—Gravisauria
—Eusauropoda
—Neosauropoda
—Macronaria
—Titanosauriformes
—Somphospondyli
—Titanosauria
—Colossosauria
—Rinconsauria
genusMaxakalisaurus
speciestopai

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.

†Maxakalisaurus topai Kellner et al. 2006
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Diagnosis
ReferenceDiagnosis
A. W. A. Kellner et al. 2006Titanosaur dinosaur characterized by the following combination of features:
tail composed of anterior and midposterior caudal vertebrae with the anterior (and
posterior) surface of the centrum dorsoventrally compressed; midposterior caudal
vertebrae with the lateral surface of the centrum strongly concave (spool-shaped);
dorsal margin of neural spine in midposterior caudal vertebrae inclined anteriorly;
presence of at least one midposterior caudal with biconvex centrum; metacarpal IV
about 12% shorter than metacarpal II; sacral centrum with keel-shaped ventral surface.