Argentinosaurus

Name:
Argentinosaurus (Greek for "Argentina lizard"); pronounced ARE-jen-teen-oh-SORE-us
Habitat:
Forests of South America
Historical Period:
Middle Cretaceous (100-90 million years ago)
Size and Weight:
Up to 130 feet long and 110 tons
Diet:
Plants
Distinguishing Characteristics:
Enormous size; long neck; relatively small head
About Argentinosaurus:

As you may have guessed from its name, the remains of Argentinosaurus were dug up in present-day Argentina, in South America. To date, researchers haven't found an entire skeleton, but what they have found--four-foot long vertebrae and five-foot-long tibiae--indicate that Argentinosaurus was a truly titanic sauropod (hence its classification in some circles as a titanosaur). See more facts, figures and news about Argentinosaurus and a gallery of Argentinosaurus pictures

Interestingly, the remains of Argentinosaurus were dug up near the fossils of another huge dinosaur--the carnivorous theropod Giganotosaurus. This has led paleontologists (and TV producers) to speculate that packs of Giganotosaurus may have hunted down full-grown Argentinosaurus adults--a chase that would have been deadly for any smaller creatures that happened to get in the way!