| The ethmoid is fully ossified, but does not extend anteriorly between the nasals. |
| The posterior edges of the nasals are rounded and blunt, and do not narrow to a slender point as they do in H. gregarius. |
| Not surprisingly, there is also evidence that verbs ending in nasals can be subject to the influence of analogies with derived verbs. |
| This asymmetry affects particularly the premaxillae, the maxillae, and the nasals. |
| As in the cetacea, the nasal bones are limited in size, and the premaxillae send up processes to join the frontals and the nasals. |
| The area corresponding to the lacrimals, prefrontals and posterior nasals is difficult to recognise. |
