摘要
通过对物种及其生存空间的研究，提出了边缘幸存空间这一新的概念─—物种生存空间之外，居群不能稳定地延续，而生物个体可以存在的空间。还讨论了边缘幸存空间的存在特点及明确了几种在地层中识别边缘幸存空间的方法。最后，以这一概念为基础，讨论了西藏白垩纪赛诺曼期Ｂｉｓｃｕｔｕｍｅｌｌｉｐｔｉｃｕｍ的发现及其意义。
Marginal surviving space,a new concept,is proposed here after analysing species and its living space. Such 'space' means a special environment for individual and population,in which individual can survive while population can not maintain its size. This new concept is important in reconstruction of paleoenvironment and recognition of dispersal route.Based on the definition of the new concept,the existing pattern of marginal surviving space is discussed,with some distinguishing methods of such 'spgce' in the strata also given in the paper. In addition,according to the new concept,a going discussion is made on Biscutum eUipticum found in the Cenomanian strata of southern Tibet.
出处
《古生物学报》
CAS
CSCD
北大核心
1995年第4期518-523,共6页
Acta Palaeontologica Sinica
关键词
边缘幸存空间
生存空间
扩散
marginal surviving space, living space, dispersal
