Argentinosaurus

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 Temporal range: Upper Cretaceous 96.2–92.19 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Reconstructed skeleton, Museo Municipal Carmen Funes, Plaza Huincul, Argentina. The original vertebrae are seen on the lower left
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	†Sauropodomorpha
Clade:	†Sauropoda
Clade:	†Titanosauria
Clade:	†Lithostrotia
Clade:	†Lognkosauria
Genus:	†Argentinosaurus Bonaparte & Coria, 1993
Type species
†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,^[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

Skeletal diagram

The following shows the disagreement on estimates of size:

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