Disarticulation of kangaroo skeletons in semi-arid Australia

Abstract

This study presents a natural disarticulation sequence for the western grey kangaroo, Macropus fuliginosus, from surface bone assemblages in semi-arid South Australia. Comparison with published disarticulation sequences for African ungulates reveals significant differences in the kangaroo sequence, including earlier disarticulation of the forelimb long bones, carpus and cervical elements, and later disarticulation of the caudal vertebrae, and hindlimb long bones. These differences closely correspond to anatomical and morphological features of the kangaroo skeleton. The results of this study suggest that anatomy plays an important role in disarticulation and may ultimately control the process even following utilisation by predators and scavengers. The disarticulation sequence reported here has useful applications for the interpretation of fossil bone assemblages containing both extant and extinct kangaroos.