![]() ![]() ![]() In their 1993 first description of Argentinosaurus, Bonaparte and Coria noted it differed from typical titanosaurids in having hyposphene-hypantrum articulations. The first he encountered was a juvenile on its own, which was nevertheless at least as large as the largest Sarcosuchus in the lake nearby though Nigel explained that the adults were 40 times as heavy. ![]() , Bonaparte presented the new find in 1989 at a scientific conference in San Juan.
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