Fig. 2From: Topography of cranial foramina and anaesthesia techniques of cranial nerves in selected species of primates (Cebidae, Cercopithecidae, Lemuridae) – part I – osteologyMethod of the cranial foramina measurement. SP (sagittal plane) – sagittal plane, TP (transverse plane) – horizontal plane, SD (sagittal diameter) - length, TD (transverse diameter) - width. A - Celebes crested macaque (Macaca nigra) (foramen mentale); B - L’Hoest’s monkey (Allochrocebus lhoesti) (foramen jugulare)Back to article page