Argentinosaurus Facts
Pronunciation: ar-JEN-tee-no-SORE-us
Name meaning: Argentine Lizard
| Diet | Herbivore |
| Height | 7m |
| Length | 35m |
| Weight | 80 tonnes |
| Environment | Land |
| Era | Cretaceous |
| Period | Late Cretaceous |
| Type | Sauropod |
| Location | Argentina |
Argentinosaurus was one of the most massive creatures ever to walk the Earth, representing the absolute pinnacle of sauropod evolution. This colossal herbivore lived approximately 100.5 million years ago during the Late Cretaceous period in what is now Argentina. Despite being known only from fragmentary remains, scientists estimate that Argentinosaurus reached lengths of up to 35 metres and weighed between 65-80 tonnes, making it one of the largest land animals in Earth's history.
As a sauropod, Argentinosaurus possessed the classic long-necked body plan that made these dinosaurs so successful. Its enormous neck, supported by powerful shoulder muscles and reinforced vertebrae, allowed it to browse vegetation at heights no other land animal could reach. The creature's massive body was supported by four pillar-like legs, with each footstep leaving impressions the size of bathtubs in the ancient mudflats of Cretaceous Argentina.
Argentinosaurus belonged to a group called titanosaurs, which were the dominant sauropods of the Cretaceous period. These giants had evolved more efficient feeding strategies and stronger skeletal structures than their Jurassic predecessors. Despite its enormous size, Argentinosaurus likely travelled in herds across the lush floodplains of ancient South America, following seasonal food sources and protecting their young through sheer size and numbers.
What made Argentinosaurus distinctive?
Argentinosaurus was distinguished by its truly colossal size, with vertebrae measuring over 1.5 metres tall and ribs extending outwards like the beams of a cathedral. Its neck vertebrae showed distinctive pneumatic features - hollow chambers that reduced weight whilst maintaining strength.
Behaviour
Argentinosaurus likely lived in herds, as evidenced by trackways found in Argentina showing multiple large sauropods travelling together. These giants would have migrated seasonally across vast distances, following food sources and suitable nesting sites.
Discovery
Argentinosaurus was first described by José F. Bonaparte and Rodolfo Coria in 1993. The original fossils were discovered at Plaza Huincul Formation, Neuquén Province, Argentina.
Argentinosaurus FAQ
What did Argentinosaurus eat?
Argentinosaurus was a herbivore that fed on conifers, ferns, and flowering plants. Its long neck allowed it to browse vegetation at heights up to 17 metres above ground, reaching treetops that other animals couldn't access. It likely consumed several tonnes of plant matter daily to fuel its massive body.
How big was Argentinosaurus?
Argentinosaurus reached lengths of 30-35 metres, stood about 7 metres tall at the shoulder, and weighed between 65-80 tonnes. To put this in perspective, it was longer than three buses end-to-end and weighed more than ten elephants combined.
When did Argentinosaurus live?
Argentinosaurus lived during the
Late Cretaceous period, approximately 100.5 million years ago. This was during the middle of the Cretaceous period, when flowering plants were becoming more common and South America was an island continent.
Where was Argentinosaurus found?
Argentinosaurus was discovered in Argentina, specifically in the Plaza Huincul Formation in Neuquén Province. The fossils were found in rocks that were once ancient river floodplains where these giants lived and died.
How do you pronounce Argentinosaurus?
Argentinosaurus is pronounced 'ar-JEN-tee-no-SORE-us', with emphasis on the second syllable. The name literally means 'Argentine lizard', referring to the country where it was discovered.
What does Argentinosaurus mean?
Argentinosaurus means 'Argentine lizard' in Latin. The name honours Argentina, the South American country where this magnificent giant was discovered by palaeontologists in the 1980s.
How fast could Argentinosaurus run?
Argentinosaurus couldn't run due to its enormous size and weight. Scientists estimate it walked at a leisurely pace of around 2-5 kilometres per hour. Its massive legs were built for supporting weight rather than speed.
What type of dinosaur was Argentinosaurus?
Argentinosaurus was a sauropod dinosaur, specifically belonging to the family Titanosauridae. Sauropods were the long-necked, long-tailed herbivorous giants that dominated terrestrial ecosystems during much of the Mesozoic Era.
Was Argentinosaurus related to birds?
Argentinosaurus was not closely related to birds. As a sauropod, it belonged to the saurischian dinosaurs but was part of a different evolutionary branch. Birds evolved from theropod dinosaurs, whilst Argentinosaurus was a sauropod - both groups split apart very early in dinosaur evolution.
How many Argentinosaurus fossils have been found?
Very few Argentinosaurus fossils have been discovered - only fragmentary remains including several vertebrae, ribs, a fibula, and some other bone fragments. Despite the limited material, these fossils are sufficient to estimate its enormous size and classify it scientifically.
