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Non‐contact optical 3D‐profiling instruments are often used in the study of surface modifications on fossil mammalian bone. The advantage of optical laser scanning for the study of fossil and sub‐fossil bone is its non‐contact nature, allowing the investigation of fragile and poorly preserved surfaces. The high resolution and fast measuring rate of this method make it an alternative to scanning electron microscopy (SEM) investigation if topography is to be visualized. This study analyses clusters of incisions in a suid humeral fragment from the Pliocene Upper Laetolil Beds. The marks show a characteristic crest structure that is also frequently found in mandible marks produced by the Australian termite species Mastotermes darwiniensis. The marks from the Laetolil Beds are, therefore, interpreted as also being caused by insect mandible action. An as yet unknown large insect species capable of modifying bone with their mandibles is thus postulated in the palaeohabitat represented by the hominid‐bearing Upper Laetolil Beds. Copyright © 2001 John Wiley & Sons, Ltd. 相似文献
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Naomi Pendle 《Development and change》2023,54(3):467-489
Activists and scholars are seeking to end famine by promoting international legal accountability for starvation. This article deepens our understanding of the relationship between the politics of famine and law by observing the ongoing prevalence and power of legal norms and institutions during times of famine. It reveals the widespread use of hunger courts in famine-prone South Sudan and their role in legally enforcing social networks that provide for the most vulnerable. Based on analysis of country-wide survey data from 2018 and 2019, qualitative interviews from 2019‒22 and in-depth ethnographic observations of hunger courts in one chiefdom in South Sudan during a period of famine-level hunger in 2018 and 2019, the article argues that hunger courts have played a key role in enforcing social networks. These courts have also supported continuity of chiefs’ authority despite crisis. The article concludes by addressing two issues: whether law is necessarily emancipatory in times of famine, and whether legal norms have shifted responsibility for hunger away from the political economies and conflicts that cause famine, instead placing blame and shame on the families of the most vulnerable. 相似文献
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Horst Pietschmann 《Journal of Historical Geography》1978,4(2):214-215