Giganotosaurus, tooth Argentinosaurus but is now known to

but is now known to be a carnosaur related to Allosaurus

Males may have had larger crests than females

Carnotaurs were related to a primitive group of theropods called Abelisaurids

lakes and rivers

Giganotosaurus, tooth Argentinosaurus but is now known toGiganotosaurus and Pronounced (JIG ah NOT oh SAWR us) meaning "giant southern reptile" it was one of the largest meat eating dinosaurs. This theropod was slightly longer than T. rex. It was about 43 ft (13 m) long and weighed roughly 8 tons. It lived during the mid Cretaceous period, about 100 95 million years ago. Its fossil was unearthed in the Patagonia region of Argentina (in southern Argentina) in 1994. This fossil replica is from the largest