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An improved age estimation method for caribou and reindeer using tooth eruption and wear
Journal of Archaeological Science ( IF 2.6 ) Pub Date : 2024-12-12 , DOI: 10.1016/j.jas.2024.106133
Grace Kohut, Robert Losey, Susan Kutz, Kamal Khidas, Maxime Pelletier, Tatiana Nomokonova

Dental age estimation based on tooth eruption schedules and wear is a useful analytical tool in zooarchaeology for developing demographic profiles for animal skeletal remains, particularly those from ruminants. While tooth eruption schedules are applicable only to younger individuals, tooth wear can be used for older animals as the heights of their crowns shorten over their lifetime, creating recognizable visual changes to tooth occlusal surfaces. This study presents a novel tooth eruption and wear age estimation method for Rangifer tarandus, a key species of the Circumpolar North. The method was created using a sample of over 600 mandibles from known-age caribou and reindeer from several populations. These are Qamanirjuaq, Beverly, Dolphin-Union, Bluenose East, and Bluenose West caribou herds from Canada and forest reindeer from Finland. The method provides a user-friendly manual featuring tooth wear illustrations of premolars and molars created using frequency of occurrence data of easily recognizable visual wear traits. This method can be applied to modern and archaeological Rangifer dentition to estimate age and can be utilized with complete or fragmentary mandibles, including isolated teeth.

中文翻译:


一种使用牙齿萌出和磨损的驯鹿和驯鹿的改进年龄估计方法



基于牙齿萌出时间表和磨损的牙齿年龄估计是动物考古学中一种有用的分析工具,用于开发动物骨骼遗骸的人口统计概况,尤其是反刍动物的骨骼遗骸。虽然牙齿萌出时间表仅适用于年轻人,但牙齿佩戴可用于老年动物,因为它们的牙冠高度在其一生中会缩短,从而对牙齿咬合表面产生可识别的视觉变化。本研究提出了一种新的环极北极关键物种 Rangifer tarandus 的牙齿萌出和磨损年龄估计方法。该方法是使用来自多个种群的已知年龄的驯鹿和驯鹿的 600 多根下颌骨样本创建的。它们是来自加拿大的 Qamanirjuaq、Beverly、Dolphin-Union、Bluenose East 和 Bluenose West 驯鹿群和来自芬兰的森林驯鹿。该方法提供了一本用户友好的手册,其中包含前磨牙和磨牙的牙齿磨损插图,这些插图使用易于识别的视觉磨损特征的出现频率数据创建。这种方法可以应用于现代和考古学的 Rangifer 牙列以估计年龄,并且可以用于完整或零碎的下颌骨,包括孤立的牙齿。
更新日期:2024-12-12
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