Straight-tusked Elephant vs. Giraffatitan brancai

[Infinity Blade]

He did it the way most estimates for Giraffatitan are obtained, by first calculating a volume and then masses assuming various densities (here, he assumed 0.8-0.9 g/cm^3). Even with such a seemingly rigorous and straightforward approach (seeing how complete the specimen is), volume estimates vary, as the Wikipedia article shows.

I know what his methods were, I'm just wondering what exactly may have caused the any discrepancy between it and Bates et al. (2015)'s estimate.

[creature386]

This explanation was more for dinosauria, as his own explanation seemed slightly off.

[theropod]

svpow.com/2014/06/09/how-heavy-was-giraffatitan-brancai-i-mean-really/

These major discrepancies between the mass estimates for this specimen have been noted, and are indeed puzzling, but there is of course some liberty with how much flesh we put on those bones, how wide we make the belly etc.
The figure I used was simply the minimum.

[dinosauria101]

78 tonnes seems like waaay to much, but 19 is too conservative.

30-40 may be the best range from there

[theropod]

As Bates et al. pointed out their minimum convex hull models are likely too conservative, with their 21%+ models reflecting how much other animals in real life tend to be heavier compared to the minimum convex hulls. That gives 24 t, very close to Mike Taylor’s 23 t estimate. 30 t is reasonable too.

40t is likely too much for this individual.

[denis]

I think Palaeoloxodon Namadicus would be a far more even fight