On applications of micro-photogrammetry and geometric morphometrics to studies of tooth mark morphology: The modern Olduvai Carnivore Site (Tanzania)

Abstract

Recent application of photogrammetric and geometric morphometric approaches to the study of cut marks on bones has yielded positive results in discriminating different types of tools and even some raw materials. Here, we apply this analytical technique to the study of carnivore tooth scores. The goal is twofold: on the one hand, we intend to differentiate carnivore types and on the other one, we show the application of this approach to a sample of tooth scores from long bones documented at the modern assemblage of the Olduvai Carnivore Site (OCS). Previous taphonomic work at OCS suggested that this bone assemblage constituted a good evidence of a carcass accumulation behavior by lions, followed by hyena ravaging. The application of these 3D techniques to the selected sample of tooth marks shows that lions, as well as spotted hyenas, did indeed impart marks on the OCS assemblage. This reinforces the dual nature of the assemblage and the implication of lions in its formation.