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(11-19-2018, 06:49 AM)GrizzlyClaws Wrote: In that chart, the skull length is about 1.5 times longer than the lower jaw length.
Is this a little bit too long for the CBL?
Did P. Christiansen (2008) really state this is the CBL, not GSL?
I noticed that too. Something is odd about the way the mandibles were measured for the CBL to relate by 1.5x. The paper is attached. He only refers to CBL everywhere.
Maybe the measurement came from the bottom of the lower jaw instead of the entire mandible?
BTW, the Padang specimen might have proportionally smaller canine teeth the modern tigers, hence the difference of proportion needs to be coped.
That method of measurement would make sense and could explain why in this study the lion has a much longer mandible proportionately than the tiger. If the mandible was measured from the angular process to the symphysis and the coronoid process was not measured, the tiger would appear to have a proportionately shorter mandible as tigers generally have a coronoid process that extends beyond the inferior processes.
The smaller the canine teeth proportionately, the longer the skull. That would make the skull fall off the scale in terms of size. The opposite is also a possibility.
I do recall that you gave the conclusion that the Padang mandible is overall more robust than the mandible of the specimen 2900-3 of Panthera atrox.
However, the lion-like felines always got longer coronoid process in count. Therefore, at the similar length, the tiger-like felines would usually get more robust mandible.
Tiger's face looks like a Felidae because of the short and round character, perhaps they were rising lately and without developing specially I think, and they may never expand the range out of Asia like Lion.
Tiger and Snow Leopard are Asiatic native Panthea species and without any population which out of Asia, however, Snow Leopard's
descent has owned some African Panthera species's characters, therefore, Tiger is the most pure Asiatic native Panthera species,compared with Lion-Leopard-Jaguar, they are more conservative.
Maybe tiger was derived from the direct lineage of the proto pantherine that first appeared in Asia.
Those African pantherines had coped a lot to adapt in an open environment when their ancestor migrated to Africa.