We studied a maxillary fragment of tarsier and revealed that tarsiers had already achieved gigantic orbits and bell-shaped palate by the time of middle Eocene.

• 对于眼镜猴上颌骨片断的研究表明，中始新世的眼镜猴已经具有了如同现生眼镜猴一样的钟形腭和明显增大的眼眶。