Published in Scientific Works. Series C. Veterinary Medicine, Vol. LXXI, Issue 2
Written by Ionuț Mădălin PEIA, Petronela Mihaela ROȘU, Adela Ioana MUSTĂȚEA
This study aims to describe the anatomical features of the thoracic and pelvic limbs in Mandrillus sphinx. Detailed analysis has highlighted the distinctive morphological features of this species. The scapula has an accessory scapular spine that divides the infraspinous fossa into two unequal portions and a prominent acromion flanked by a small para-acromion. The lateral and superior margins are strongly developed, continuing with sharp bony prominences curved towards the neck of the scapula. The humerus has a large prominent tubercle and a small tubercle of reduced size. The deltoid surface is markedly expanded and the deltoid tuberosity is very well developed. The supinator crest, clearly evident, extends proximally from the lateral epicondyle. The radius has a prominent radial crest and the ulna has a medially oriented trochlear notch and a tuberous olecranon. The coxal bone is notable for a well-developed dorso-caudal ischium, thus forming the ischial tuberosities. The femur does not have a third trochanter, which is replaced by the gluteal tuberosity. The tibia has a prominent tibial crest, slightly bent laterally, medially to it, with an extended distal tuberosity. On the medial side of the fibula, there is a prominent crest representing the surface for the insertion of the interosseous membrane. Following the detailed description of the bone structures that make up the pelvic limb, we can classify this species as intermediate between higher and lower primates, being adapted to a mixed arboreal-terrestrial environment.
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