Check the image:
I made a correction in the position of my arm;
after all, the arm of the man in the picture is not straight in upper view, but
slightly twisted. So, the results of my arm (photoshoped one) will measure 5.3
cm in the wrist and 8.4 in the middle arm, slightly less than the original
The results are:
* By the wrist: 5.3+5.3+2.7+1.3 = 14.6*2 = 29.2
cm (or slightly less).
* By the middle arm: 8.4+4.2+2.1 = 14.7*2 =
29.4 cm (or slightly more).
This rouge result, corrected by the arm angle,
suggests that the zygomatic wide of the giant tiger skull is more than 29 cm,
probably up to 30 cm. I will use 29.3 cm
for the calculations in this moment as is the average of the two values
However check that the bars in the image show
that the skull was slightly larger than the end of bars in the case of the
middle arm and smaller in the case of the wrist, but from my point of view, that
of the middle arm is more reliable, as the position of the wrist changes too
much the value to estimate the correct size while the variation of the middle
arm is minimum as is more circular than the wrist area.
Using modern tiger skulls, here are the calculated
greatest skull lengths using the ratio of GSL/ZW:
Subspecies: Ratio GSL Sample
P. t. amoyensis: 1.51 442 mm 4
P. t. corbetti: 1.46 428 mm 3
P. t. sondaica: 1.43 419 mm 13
P. t. altaica: 1.44 422 mm 13
P. t. tigris: 1.41 413 mm 18
Average: 1.45 425 mm 5
(all the ratios)
The result show that overall the populations,
the estimated GSL should be of c.425 mm, which his larger than any modern tiger
skull, however as we know that the most close relative of the Wanhsien tiger is
the South China tiger (Panthera tigris
amoyensis), then the most accurate comparison should be the figure of 442
The less reliable is that of the Bengal tiger,
as this is the most modern tiger subspecies to evolve and by the same, the less
related with the Pleistocene subspecies.
I tried to scale the arm equally, but my arm is
wider in the middle and narrower in the wrist. So, this can affect the
measurements, but I don’t know by how much.
This could be qualified as a silly intent, but
at least, I am trying to found a reliable way to guess more or less the size of
this skull. This is the best that I can do (for the moment), with such little
material. Hope this helps a little.