A new estimation J go to this link.

A new estimation J. Monesi body mass with a more complete analysis suggests that it may have weighed as little as 350 kg go to this link .Estimate the body mass of extinct species remains a major methodological challenges in the field of paleobiology.Proceedings of the Royal Society B: Biological SciencesB Proceedings of the Royal Society ‘s flagship biological journal that deals with the rapid publication and broad dissemination of high quality research, ratings and comments and answer papers. The scope of of the journal is diverse and is especially strong in biological organisms.

350 kg.e greatest among the smallest: The Body Mass Of The Giant Rodent Josephoartigasia Monesibody size is correlated with the most physiological, ecological and evolutionary characteristics and is the main character of an organism.

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The reseacher being Patrick Taylor, the Paediatric Clinic Boston, at Harvard Medical School.