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I'm having some problems finding the right way to measure total skull length
in order to compare it to the relative length of other skull elements. Most
of the papers list total skull length as the length measured from the tip of
the premaxilla or rostral to the posterior end of the quadrate condyle. But
using this has caused some problems. Take for exemple the skulls of the
Pachycephalosauria, if you measure from the anterior tip of the premaxilla
to the posterior end of the quadrate condyle you get a length which is much
smaller than the actual length of the skull, since the quadrate condyle is
facing very much anteriorly. The same problem goes for members of the
Ceratopsia, because you don't take into account the posterior facing frill.
So wouldn't it be for exemple better to measure total skull length from the
anterior tip of the premaxilla/rostral to the posterior end of the parietal?
Or can this cause problems? I was hoping that other members of the list have
got something to say about this problem.
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