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Aeolosaurus rionegrinus

Reptilia

Taxonomy
Aeolosaurus rionegrinus was named by Powell (1987). Its type specimen is MJG-R 1, a set of postcrania, and it is a 3D body fossil. Its type locality is Casa de Piedra, Estancia Maquinchao, which is in a Campanian/Maastrichtian terrestrial horizon in the Angostura Colorada Formation of Argentina.

Synonymy list
YearName and author
1987Aeolosaurus rionegrinus Powell p. 148
1992Aeolosaurus rionegrinus Powell p. 203
1993Aeolosaurus rionegrinus Salgado and Coria p. 127
1996Aeolosaurus rionegrinus Bonaparte p. 104 fig. 36
1996Aeolosaurus rionegrinus Jacobs et al. p. 602
1996Aeolosaurus rionegrinus Salgado p. 363
1997Aeolosaurus rionegrinus Novas p. 681
2001Aeolosaurus rionegrinus Santucci and Bertini p. 308
2002Aeolosaurus rionegrinus Wilson p. 248
2003Aeolosaurus rionegrinus Calvo and González Riga
2003Aeolosaurus rionegrinus Powell p. 26
2004Aeolosaurus rionegrinus Franco-Rosas et al. p. 332
2004Aeolosaurus rionegrinus Upchurch et al. p. 268
2005Aeolosaurus rionegrinus Apesteguía p. 262
2005Aeolosaurus rionegrinus Campos et al. p. 568
2005Aeolosaurus rionegrinus Curry Rogers p. 66
2005Aeolosaurus rionegrinus Kellner et al. p. 548
2005Aeolosaurus rionegrinus Salgado and Coria p. 440
2006Aeolosaurus rionegrinus Kellner et al. p. 2
2007Aeolosaurus rionegrinus Casal et al. p. 55
2007Aeolosaurus rionegrinus Castro et al. p. 199
2007Aeolosaurus rionegrinus Molnar and Wiffen p. 509
2008Aeolosaurus rionegrinus Lopes and Buchmann p. 71
2008Aeolosaurus rionegrinus Malkani p. 56
2009Aeolosaurus rionegrinus González Riga et al. p. 141
2010Aeolosaurus rionegrinus Calvo and Porfiri p. 106
2010Aeolosaurus rionegrinus Candeiro p. 245
2010Aeolosaurus rionegrinus Malkani p. 198
2011Aeolosaurus rionegrinus González Riga p. 282
2011Aeolosaurus rionegrinus Martinelli et al. p. 35
2011Aeolosaurus rionegrinus Navarrete et al. p. 10
2011Aeolosaurus rionegrinus Santucci and Arruda-Campos
2012Aeolosaurus rionegrinus Mannion and Otero p. 634
2013Aeolosaurus rionegrinus Otero and Reguero p. 11
2015Aeolosaurus rionegrinus Filippi p. 25
2015Aeolosaurus rionegrinus Malkani p. 7
2015Aeolosaurus rionegrinus de Jesus Faria et al. p. 157
2017Aeolosaurus rionegrinus Gorscak et al. p. 17
2020Aeolosaurus rionegrinus de Valais et al. p. 406
2021Aeolosaurus rionegrinus Apesteguía et al.
2022Aeolosaurus rionegrinus Soto et al.

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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
—Colossosauria
—Aeolosaurini
genusAeolosaurus
speciesrionegrinus

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.

†Aeolosaurus rionegrinus Powell 1987
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Diagnosis
ReferenceDiagnosis
J. E. Powell 2003Caudal vertebrae with compressed centra, with high lateral walls and narrow ventral face, from the 3rd–4th caudal. Prezygapophyses longer than in any other known titanosaurid, projecting forward and upward on the anterior caudals, and slightly forward on the 4th caudal. Neural arch inclined somewhat forward. Neurapophyses slightly inclined forward, situated on the anterior half of the centrum. Facets of the postzygapophyses more inclined than in Saltasaurus, almost parallelling the sagittal plane in anterior caudals, and located on the anterior half of the centrum. Hemapophysis with separated articular ends. Articular facets of hemapophysis divided into two angled surfaces. Wide scapular lamina, distally expanded. Prominence for muscular attachment upon the internal face close to the upper margin of the scapula, as in Saltasaurus loricatus. Humerus robust with a prominent apex on the deltoid crest for the insertion of the pectoral muscle. Metacarpals relatively short and stout as in Saltasaurus loricatus. Pubis with wide distal end of pubic lamina.
R. M. Santucci and A. C. d. Arruda-Campos 2011Titanosaur with the following unique association of characteristics: prezygapophyses directed mainly upward on anteriormost caudal vertebrae and slightly curved downward on the remaining anterior caudal vertebrae; prezygapophyseal articular facets widened by the presence of both a dorsal and a ventral protuberance on the prezygapophyses of the anterior caudal vertebrae; and apex of the convexity of the posterior articulation strongly displaced upward, so that the apex is flushed to the level of the dorsal margin of the centrum on anterior and middle caudal vertebrae.
Measurements
No measurements are available
Composition: hydroxyapatiteinfrao
Entire body: yesinfrao
Adult length: 10 to < 100infrao
Adult width: 10 to < 100infrao
Adult height: 10 to < 100infrao
Thickness: thickinfrao
Architecture: compact or denseinfrao
Form: sphericalinfrao
Ontogeny: accretion, modification of partsinfrao
Grouping: gregariousinfrao
Environment: terrestrialinfrao
Locomotion: actively mobileinfrao
Life habit: ground dwellinginfrao
Diet: herbivoreinfrao
Reproduction: oviparousinfrao
Dispersal: direct/internalinfrao
Dispersal 2: mobileinfrao
Created: 2004-12-14 12:49:10
Modified: 2004-12-14 14:49:10
Source: infrao = infraorder
Reference: Marsh 1875

Age range: base of the Late/Upper Campanian to the top of the Early/Lower Maastrichtian or 83.50000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0Argentina (Río Negro) Aeolosaurus rionegrinus (type locality: 58573)