Freak Felids - A Discussion of History's Largest Felines

[tigerluver]

Acinonyx pardinensis

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These were truly giant cheetahs. Look at the specimens estimated at over 100 kg. I see van Valkenberg formulas were used, but as these are small cats on a relative scale, they would be more prone to underestimation than overestimation due to allometry.

How much is the difference between the in-flesh and bone skull length? Looking at 154 mm Italian mandible, I estimate a GSL of 231 mm. If I add 30 mm to convert to an in-flesh measurements and isometrically compare to modern wild cheetahs, we get (261 mm/227 mm)^3 * 62.4 = 95 kg. 

For the 24.4 mm lower M1 specimen, I translate a bone skull length of 24.4/21.3*231 = 264.6 mm, so an in-flesh length of 300 mm, and thus a mass of 144 kg!

I'm not certain if added too much/too little to adjust for the in-flesh length, but regardless, truly "freak" cheetahs. As always, paper attached. Reply