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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Colossosauria
Taxonomy
Colossosauria was named by González Riga et al. (2019).
It was assigned to Eutitanosauria by Hechenleitner et al. (2020), Navarro et al. (2022) and Carballido et al. (2022); to Lithostrotia by González Riga et al. (2019) and Agnolín et al. (2023); and to Titanosauria by Agnolin et al. (2023).
It was assigned to Eutitanosauria by Hechenleitner et al. (2020), Navarro et al. (2022) and Carballido et al. (2022); to Lithostrotia by González Riga et al. (2019) and Agnolín et al. (2023); and to Titanosauria by Agnolin et al. (2023).
Synonymy list
Year | Name and author |
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2019 | Colossosauria González Riga et al. |
2020 | Colossosauria Hechenleitner et al. |
2022 | Colossosauria Carballido et al. |
2022 | Colossosauria Navarro et al. p. 344 fig. 13 |
2023 | Colossosauria Agnolin et al. |
2023 | Colossosauria Agnolín et al. |
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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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Unr. †Aeolosaurini Franco-Rosas et al. 2004
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G. †Aeolosaurus Powell 1987
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†Aeolosaurus colhuehuapensis Casal et al. 2007
†Aeolosaurus rionegrinus Powell 1987
G. †Baurutitan Kellner et al. 2005
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†Baurutitan britoi Kellner et al. 2005
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Invalid names: Trigonosaurus pricei Campos et al. 2005 [synonym]
Invalid names: Trigonosaurus Campos et al. 2005 [synonym]
Unr. †Lognkosauria Calvo et al. 2007
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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
Unr. †Rinconsauria Calvo et al. 2007
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G. †Rinconsaurus Calvo and González Riga 2003
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†Rinconsaurus caudamirus Calvo and González Riga 2003
Diagnosis
Reference | Diagnosis | |
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B. J. González Riga et al. 2019 | Following 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
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Source: infrao = infraorder | |||||
Reference: Marsh 1875 |
Age range: base of the Late/Upper Turonian to the top of the Early/Lower Maastrichtian or 93.50000 to 66.00000 Ma
Collections (38 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Late/Upper Cenomanian - Middle Turonian | Argentina (Santa Cruz) | Drusilasaura deseadensis (109015) | |
Middle Cenomanian - Early/Lower Turonian | Argentina (Río Negro) | Chucarosaurus diripienda (180530) | |
Middle Turonian - Late/Upper Turonian | Argentina (Mendoza) | Quetecsaurus rusconii (153997) | |
Late/Upper Turonian - Early/Lower Coniacian | Argentina (Neuquén) | Colossosauria indet. (221143 221144) Titanosauridae indet. (49415) | |
Middle Coniacian - Late/Upper Coniacian | Argentina (Mendoza) | Titanosauridae indet. (35285) | |
Late/Upper Coniacian - Early/Lower Santonian | Argentina (Neuquén) | Aeolosaurini indet. (114109) Titanosauridae indet. (55445) | |
Late/Upper Coniacian - Early/Lower Santonian | Argentina (Mendoza) | Notocolossus gonzalezparejasi (175912 175913) | |
Santonian | Argentina (Neuquén) | Overosaurus paradasorum (147178) Titanosauridae indet. (32368) | |
Middle Santonian | Argentina (Neuquén) | Rinconsaurus caudamirus (56157) | |
Campanian | Argentina (Santa Cruz) | Puertasaurus reuili (62910) | |
Campanian - Early/Lower Maastrichtian | Argentina (Chubut) | Aeolosaurus sp. (52909) | |
Campanian - Maastrichtian | Argentina (La Rioja) | Bravasaurus arrierosorum (215006) Punatitan coughlini (215008) | |
Early/Lower Campanian - Middle Campanian | Argentina (Neuquén) | Aeolosaurini indet. (117447) Pitekunsaurus macayai (86439) | |
Late/Upper Campanian - Early/Lower Maastrichtian | Argentina (Neuquén) | Panamericansaurus schroederi (98791) | |
Late/Upper Campanian - Early/Lower Maastrichtian | Brazil (Minas Gerais) | Titanosauridae indet., Sauropoda indet., Titanosauria indet. (61578) | |
Late/Upper Campanian - Early/Lower Maastrichtian | Brazil (São Paulo) | Aeolosaurus sp. (67540) Austroposeidon magnificus (181868) Nemegtosauridae indet. (55447) Titanosauridae indet. (51667 51955) | |
Late/Upper Campanian - Early/Lower Maastrichtian | Argentina (Río Negro) | Aeolosaurini indet. (231728) Aeolosaurus rionegrinus (58573) Aeolosaurus sp. (32370) | |
Late/Upper Campanian - Maastrichtian | Brazil (Mato Grosso) | Gondwanatitan sp., Aeolosaurini indet. (59367) | |
Maastrichtian | Brazil (Minas Gerais) | Baurutitan britoi (51960) Trigonosaurus pricei, Aeolosaurus indet. (64133) Uberabatitan ribeiroi (82786) | |
Maastrichtian | Uruguay (Río Negro) | Neuquensaurus australis (223925) | |
Late/Upper Maastrichtian | Brazil (Minas Gerais) | Aeolosaurus sp. (81105) Caieiria allocaudata, Titanosauridae indet., Titanosaurus sp. (51628) | |
Late/Upper Maastrichtian | Brazil (São Paulo) | Aeolosaurus sp. (83263) |