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QUICK FACTS
 WHAT'S IN A NAME?
Also known as:
Not Available
Etymology:
The lizard of La Amarga (La Amarga produced the holotype), In recognition of Dr. Luis B. Cazau
Pronunciation:
uh-MARG-uh-SAWR-us
DISCOVERY
Amargasaurus cazaui
was discovered by Salgado in 1991 in the La Amarga Formation of Chubut, Argentina
VITAL STATISTICS
Time Span:
140.2 - 136.4 mya
Length: 8 - 9 m Weight: 3000 - 4700 kg Diet: Herbivore CLASSIFICATION
Class:
Sauropsida
Sub-class:
Diapsida
Super-order:
Dinosauria
Order:
Saurischia
Sub-order:
Sauropodomorpha
Infra-order:
Sauropoda
Family:
Dicraeosauridae
Genus:
Amargasaurus
Species:
cazaui
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Amargasaurus cazaui
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This sauropod had elongations on its vertebrae; only the African genus Dicraeosaurus is somewhat similar. It also had a double row of spines along its neck, back, and tail.
The spines have been interpreted as adaptations for defence. There are other possible explanations, e.g. social hierarchy.
