Complex sentence: The molar teeth of the brushtail possum are more rounded than those of the greater glider and the ringtail possum, so that they cannot cut the leaf tissue of "Eucalyptus" foliage as finely as those of these more specialized feeders.
Split into simpler sentences: The molar teeth of the brushtail possum are more rounded than those of the greater glider and the ringtail possums. As such it cannot cut the leaf tissue of "Eucalyptus" foliage as finely as these more specialized feeders.