bones, size, front, skull, jaw, appearance, membrane, pass, consists, internal, processes, centre, extent, nasal, skeleton, passing, frontal, opposite, direction, somewhat, separate, presents, backward, arrangement, smaller, temporal, palate, bony, inserted, molar, absent, transverse, structures, backwards, section, molars, instances, dental, termed, peculiar, axis, chamber, hollow, Figs, horizontal, band, ligaments, canals, consisting