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06-15-2015, 09:19 AM( This post was last modified: 06-15-2015, 09:26 AM by tigerluver )
Spinosaurus may have been heavier than its frame suggested, as per Ibrahim et al. (2014), "Bone density within the long bones, in addition, is 30 to 40% greater in Spinosaurus than in other theropods (8)". The bone density issue is the reason why tigers are oddly heavy for their bone frame.
See attachment for the Therian study.
I can't say anything on the potential accuracy of any estimate yet.