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Colossosauria

Reptilia

Synonymy list
YearName and author
2019Colossosauria González Riga et al.
2020Colossosauria Hechenleitner et al.
2022Colossosauria Carballido et al.
2022Colossosauria Navarro et al. p. 344 fig. 13
2023Colossosauria Agnolin et al.
2023Colossosauria Agnolín 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
RankNameAuthor
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Sauropoda()
—Gravisauria
—Eusauropoda
—Neosauropoda
—Macronaria
—Titanosauriformes
—Titanosauria
—Colossosauria
—Colossosauria

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.

Unr. †Colossosauria González Riga et al. 2019
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G. †Chucarosaurus Agnolin et al. 2023
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†Chucarosaurus diripienda Agnolin et al. 2023
Unr. †Lognkosauria Calvo et al. 2007
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G. †Austroposeidon Bandeira et al. 2016
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†Austroposeidon magnificus Bandeira et al. 2016
G. †Drusilasaura Navarrete et al. 2011
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†Drusilasaura deseadensis Navarrete et al. 2011
G. †Futalognkosaurus Calvo et al. 2007
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†Futalognkosaurus dukei Calvo et al. 2007
G. †Mendozasaurus González-Riga 2003
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†Mendozasaurus neguyelap González-Riga 2003
G. †Quetecsaurus González Riga and Ortiz David 2014
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†Quetecsaurus rusconii González Riga and Ortiz David 2014
G. †Traukutitan Juárez Valieri and Calvo 2011
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†Traukutitan eocaudata Juárez Valieri and Calvo 2011
G. †Notocolossus González Riga et al. 2016
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†Notocolossus gonzalezparejasi González Riga et al. 2016
G. †Puertasaurus Novas et al. 2005
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†Puertasaurus reuili Novas et al. 2005
Unr. †Rinconsauria Calvo et al. 2007
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G. †Adamantisaurus Santucci and Bertini 2006
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†Adamantisaurus mezzalirai Santucci and Bertini 2006
G. †Arrudatitan Silva Junior et al. 2022
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†Arrudatitan maximus Santucci and Arruda-Campos 2011
G. †Brasilotitan Machado et al. 2013
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†Brasilotitan nemophagus Machado et al. 2013
G. †Bravasaurus Hechenleitner et al. 2020
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†Bravasaurus arrierosorum Hechenleitner et al. 2020
G. †Chadititan Agnolin et al. 2025
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†Chadititan calvoi Agnolin et al. 2025
G. †Maxakalisaurus Kellner et al. 2006
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†Maxakalisaurus topai Kellner et al. 2006
G. †Muyelensaurus Calvo et al. 2007
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†Muyelensaurus pecheni Calvo et al. 2007
G. †Overosaurus Coria et al. 2013
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†Overosaurus paradasorum Coria et al. 2013
G. †Pitekunsaurus Filippi and Garrido 2008
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†Pitekunsaurus macayai Filippi and Garrido 2008
G. †Punatitan Hechenleitner et al. 2020
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†Punatitan coughlini Hechenleitner et al. 2020
G. †Rinconsaurus Calvo and González Riga 2003
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†Rinconsaurus caudamirus Calvo and González Riga 2003
G. †Rukwatitan Gorscak et al. 2014
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†Rukwatitan bisepultus Gorscak et al. 2014
G. †Uberabatitan Salgado and Carvalho 2008
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†Uberabatitan ribeiroi Salgado and Carvalho 2008
Diagnosis
ReferenceDiagnosis
B. J. González Riga et al. 2019Following this paper, Colossosauria is diagnosed by seven ambiguous synapomorphies: humerus, minimum mediolateral width divided by proximodistal length less than 0.15 (Character 42, state 1), middle–posterior dorsal neural arches with posterior centroparapophyseal lamina (character 148, state 1), middle–posterior dorsal neural spines vertical or slightly posterodorsal (character 164, state 0), middle–posterior dorsal neural arches, neural canal in anterior view enclosed in a deep fossa in the dorsal surface of the centrum (character 338, state 1), glenoid does not expand strongly laterally relative to the lateral surface of the coracoid (character 361, state 0), humerus, deltopectoral crest, mediolateral thickness of anterior attachment surface with distal half mediolaterally expanded relative to proximal half (character 369, state 0), metacarpal V with dorsomedial margin of distal third forming a prominent ridge or flange (character 420, state 1).
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 Turonian to the top of the Maastrichtian or 93.90000 to 66.00000 Ma

Collections (25 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Cenomanian - Middle Turonian100.5 - 89.8Argentina (Santa Cruz) Drusilasaura deseadensis (109015)
Middle Cenomanian - Early/Lower Turonian100.5 - 89.8Argentina (Río Negro) Chucarosaurus diripienda (180530)
Cenomanian - Campanian100.5 - 72.2Tanzania (Mbeya) Rukwatitan bisepultus (156028)
Middle Turonian - Late/Upper Turonian93.9 - 89.8Argentina (Mendoza) Quetecsaurus rusconii (153997)
Late/Upper Turonian - Early/Lower Coniacian93.9 - 85.7Argentina (Neuquén) Colossosauria indet. (221143 221144) Titanosauridae indet. (49415)
Middle Coniacian - Late/Upper Coniacian89.8 - 85.7Argentina (Mendoza) Titanosauridae indet. (35285)
Late/Upper Coniacian - Early/Lower Santonian89.8 - 83.6Argentina (Neuquén) Titanosauridae indet. (55445)
Late/Upper Coniacian - Early/Lower Santonian89.8 - 83.6Argentina (Mendoza) Notocolossus gonzalezparejasi (175912 175913)
Middle Santonian85.7 - 83.6Argentina (Neuquén) Rinconsaurus caudamirus (56157)
Santonian85.7 - 83.6Argentina (Neuquén) Overosaurus paradasorum (147178) Titanosauridae indet. (32368)
Campanian83.6 - 72.2Argentina (Río Negro) Chadititan calvoi (239490)
Campanian83.6 - 72.2Argentina (Santa Cruz) Puertasaurus reuili (62910)
Early/Lower Campanian - Middle Campanian83.6 - 72.2Argentina (Neuquén) Pitekunsaurus macayai (86439)
Campanian - Maastrichtian83.6 - 66.0Argentina (La Rioja) Bravasaurus arrierosorum (215006) Punatitan coughlini (215008)
Late/Upper Campanian - Early/Lower Maastrichtian83.6 - 66.0Brazil (São Paulo) Aeolosaurus sp. (67540) Austroposeidon magnificus (181868) Nemegtosauridae indet. (55447) Titanosauridae indet. (51667)
Late/Upper Campanian - Early/Lower Maastrichtian83.6 - 66.0Brazil (Minas Gerais) Titanosauridae indet., Sauropoda indet., Titanosauria indet. (61578)
Maastrichtian72.2 - 66.0Brazil (Minas Gerais) Uberabatitan ribeiroi (82786)