Name: Amargasaurus (“lizard from La Amarga [a place in Argentina]”)
Kind: Saurischia (“lizard hips”)
Food: Herbivore (plant eater)
When: Early Cretaceous (about 125 million years ago)
Where: Southern South America
Lenght: About 33 feet (10 m)
Weight: About 5 tons (4,500 kg)
Amargasaurus is a sauropod (long-necked plant-eating dinosaur) that lived in what is now the Patagonia region of Argentina about 125 million years ago.
It is the latest-surviving member of a peculiar group of elephant-sized sauropods called dicraeosaurids, the bones of which have so far been found only in South America and Africa.
Uniquely among dinosaurs, the neck and back of Amargasaurus sported a double row of very tall spines that may have been used for display. Exactly what these spines may have supported – a pair of thin skin sails, a large hump, or some other structure – remains a puzzle to scientists.
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