Complex sentence: The "M. noctivagus" also has a skull with a long rostrum and fenestra between the squamosal and parietal present in some of the animals and absent in others.
Split into simpler sentences: The "M. noctivagus" also has a skull with a long rostrum and cranial openings between the squamosal and parietal bones. This is present in some of the animals and absent in others.