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Argentinosaurus

Mounted Parasaurolophus skeleton, a crested duck-billed dinosaur
Photo: Lisa Andres from Riverside, USA, CC BY 2.0, via Wikimedia Commons
Pronunciation
AHR-gen-TEEN-uh-SAWR-us
Diet
Herbivore
Posture
Quadrupedal
Period
Late Cretaceous
Length
120 feet (36.6 meters)
Height
70 feet (21.4 meters)
Weight
220,000 lbs (99,792 kg)

Order: Saurischia · Suborder: Sauropodomorpha · Infraorder: Sauropoda · Family: Titanosauridae

Argentinosaurus, recently discovered in Argentina, will probably will turn out to be the largest dinosaur yet discovered, larger than Ultrasaurosor Seismosaurus. although Seismosaurus will likely continue to hold the record for total length due to its extremely long tail, characteristic of Diplodocidae. Scientists have prepared several vetabrae and the pelvis. The cross section of one vertebra of Argentinosaurus measures over five and one half feet in height.

Reconstructed skeleton of a titanosaur, among the largest land animals
Photo: William Irvin Sellers, Lee Margetts, Rodolfo Aníbal Coria, Phillip Lars Manning, CC BY 2.5, via Wikimedia Commons

More Cretaceous-period dinosaurs →

Reference background: Natural History Museum, London — Dinosaurs; Smithsonian National Museum of Natural History — Dinosaurs; American Museum of Natural History — Dinosaurs & Fossils. Figures are typical published ranges; taxonomy follows the source era and modern consensus is noted where it differs. See our sources & fact-check policy.

Frequently asked questions

When did Argentinosaurus live?

Argentinosaurus lived during the Late Cretaceous.

Was Argentinosaurus a carnivore or a herbivore?

Argentinosaurus was a herbivore.

How big was Argentinosaurus?

Argentinosaurus was about 120 feet (36.6 meters) long, around 70 feet (21.4 meters) tall, weighing up to 220,000 lbs (99,792 kg).

Related dinosaurs

Other dinosaurs from the Titanosauridae family.

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