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A very large herbivorous sauropod dinosaur of the genus Argentinosaurus of the Cretaceous Period, having a long neck and tail and a small head.

[New Latin Argentinosaurus, genus name : Argentina, Argentina (where its remains were found) + Greek sauros, lizard.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
While as massive as a bull African elephant, Mansourasaurus was modestly sized next to titanosaur cousins such as South America's Argentinosaurus, Dreadnoughtus and Patagotitan and Africa's Paralititan, some exceeding 100 feet (30 meters) long.
Titanosaurs are famous for including the largest land animals known to science such as Argentinosaurus, Dreadnoughtus and Patagotitan.
shahinae was a titanosaur, the group of dinosaurs that include the biggest of them, like Argentinosaurus, Dreadnoughtus, and Patagotitan.
At the length of four double-decker buses, it's 10 per cent bigger than an Argentinosaurus - the previous largest dinosaur known.
A comparison of the backbones shows that this creature was 10 per cent larger than previous recordholder, the Argentinosaurus. The one-off special sees Sir David going to the dig site to witness the uncovering of these vast fossils and to the Museum of Palentology Edigio Feruglio laboratories in Trelew, Argentina, where they are cleaned and examined.
Cox adds: "The great dinosaurs like diplodocus and argentinosaurus existed on the limit of bone strength, and would have been in extreme peril if they fell over.
These include the curious Dilophosaurus, fearsome Gorgonops and two of the biggest, towering at eight metres tall, the Apatosaurus (25 metres long) and Argentinosaurus (30 metres).
Its calculated 77-tonne weight would have made it as heavy as 14 African elephants, beating the previous record holder, Argentinosaurus, by some seven tonnes.
According to the researchers, the animal was 40m long and 20m tall and weighed 77 tonnes, being as heavy as 14 African elephants, and seven tonnes heavier than Argentinosaurus, the BBC reported.
Although there are dinosaurs that are larger, Argentinosaurus for example, these species are known from only a few bones.
The huge Argentinosaurus who weighs in at a massive 75,000kg is threatened only by the equally huge Mapusaurus that lurks in the greenery and hunts in gangs.
* One of the largest sauropods, Argentinosaurus may have weighed as much as 90 tons and grown to as much as 140 feet in length--almost 10 times bigger than the largest known land mammals.