摘要
宁夏同心中中新世Platybelodondanovicheni,Amebelodontobieni和Stephanocemasthomsoni化石牙齿的δ1 3C值为 - 8.7‰～ - 1 0 .3‰ ,说明这些动物可能以δ1 3C值为 - 2 0 .7‰～ - 2 5 .3‰的C3植物作为主要食物来源。根据齿冠高低与取食嫩叶或硬草的关系 ,这三种动物的低冠齿所指示的食性支持了牙齿釉质的碳稳定同位素所指示的食性。
The δ 13 C values of fossil tooth enamel of middle Miocene Platybelodon danovi cheni, Amebelodon tobieni and Stephanocemas thomsoni from Tongxin, Ningxia ranged from -8.7‰ to -10.3‰, suggesting that these herbivorous mammals were feeding predominantly on C 3 plants. The low-crowned dentitions of these animals indicated that they were browsers. And this supported the diets suggested by stable carbon isotopic compositions of tooth enamel.
出处
《古脊椎动物学报》
CSCD
北大核心
2002年第4期300-304,共5页
Vertebrata Palasiatica
基金
北京市自然科学基金项目 (编号 :5 992 0 0 9)
国家自然科学基金项目 (编号 :4 9972 0 1 2 )资助
