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Temporal range: Late Cretaceous, 96.2–92.19Ma
|Reconstructed skeleton, Museo Municipal Carmen Funes, Plaza Huincul, Argentina. The original vertebrae are seen on the lower left|
| †Argentinosaurus huinculensis|
Bonaparte & Coria, 1993
Argentinosaurus meaning "Argentina lizard", was named by paleontologists Coria & José Bonaparte in 1993. It is known from fossilized back vertebrae, tibia, ribs and sacrum, found in Neuquén Province. It may be the largest dinosaur, but its remains are so incomplete that palaeontologists prefer to use Saltasaurus for their calculations. An accurate estimate was got for the much more complete sub-adult Dreadnoughtus.
The following shows the disagreement on estimates of size:
- Mortimer, Mickey (2001-09-12). "Titanosaurs too large?". Dinosaur Mailing List. 
- Lacovara, Kenneth J. (2014). "A gigantic, exceptionally complete titanosaurian sauropod dinosaur from southern Patagonia, Argentina". Scientific Reports. . https://dx.doi.org/10.1038/srep06196.
- Campione, Nicolás E.; Evans, David C. (2012). "A universal scaling relationship between body mass and proximal limb bone dimensions in quadrupedal terrestrial tetrapods". BMC Biology: 15. . http://www.biomedcentral.com/1741-7007/10/60/.
- Holtz, Thomas R. Jr. 2012. Dinosaurs: the most complete, up-to-date encyclopedia for dinosaur lovers of all ages .