Argentinosaurus

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Argentinosaurus
Temporal range: Upper Cretaceous
Skeletal reconstruction at the Naturmuseum Senckenberg
Scientific classification
Kingdom: Animalia
Class: Sauropsida
Superorder: Dinosauria
Order: Saurischia
Suborder: Sauropodomorpha
Infraorder: Sauropoda
(unranked): Titanosauria
Genus: Argentinosaurus
Bonaparte & Coria, 1993

Argentinosaurus was a titanosaurid sauropod dinosaur. It was an enormous, long-necked, long-tailed, quadrupedal, plant-eater from Argentina, South America during the Cretaceous period.

Argentinosaurus meaning "Argentina lizard", was named by paleontologists Coria & José Bonaparte in 1993. It is known from fossilized back vertebrae, tibia, ribs and sacrum. It may be the largest dinosaur,[1] 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.[2][3]

Rough estimates[change | change source]

The following shows the disagreement on estimates of size:

  • Thomas Holtz: 120 feet (36.6 meters)?[4]
  • Mickey Mortimer: 22–26 meters.[1]

References[change | change source]

  1. 1.0 1.1 Mortimer, Mickey (2001-09-12). "Titanosaurs too large?". Dinosaur Mailing List. [1]
  2. Lacovara, Kenneth J. et al (2014). "A gigantic, exceptionally complete titanosaurian sauropod dinosaur from southern Patagonia, Argentina". Scientific Reports. doi:10.1038/srep06196. http://dx.doi.org/10.1038/srep06196.
  3. 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. doi:10.1186/1741-7007-10-60. http://www.biomedcentral.com/1741-7007/10/60/.
  4. Holtz, Thomas R. Jr. 2012. Dinosaurs: the most complete, up-to-date encyclopedia for dinosaur lovers of all ages [2].