argentinosaurus1argentinosaurus_bw1Argentinosaurus is a genus of sauropod dinosaur first discovered by Guillermo Heredia in Argentina. The generic name means “silver lizard”, in reference to the country in which it was discovered (“Argentina” – name derived from the latin word “argentum” meaning silver). The dinosaur lived on the island continent of South America around 100 million years ago, during the middle of the Cretaceous Period.
The length of Argentinosaurus is estimated as 22–30 metres (72–98 ft). Weight estimates are less common, but Mazzetta et al. (2004) provide a range of 60–88 tonnes (66–97 short tons), and consider 73 tonnes (80 short tons) to be the most likely, making it the heaviest sauropod known.
The type species of Argentinosaurus, A. huinculensis, was described and published (by the Argentinian palaeontologists José F. Bonaparte and Rodolfo Coria) in 1993. Its more specific time-frame within the Cretaceous is the Albian to Cenomanian epochs, 112.2 to 93.5 million years ago. The fossil discovery site is in the Río Limay Formation in Neuquén Province, Argentina.
Argentinosaurus is featured prominently in the permanent exhibition Giants of the Mesozoic at Fernbank Museum of Natural History in Atlanta, Georgia, USA. At 123 feet (37 m) long, this skeletal reconstruction represents the largest dinosaur mount ever to be assembled.


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