Definition: Theory of geologic violence:a theory,now discredited,that the geologic featuresof Earth were formed by a series of sudden violent catastrophes rather than a gradualevolutionary process. A more recent version of this theory holds that the evolu...[继续阅读]

    Definition: A general concept that marks divisions or coordinations in a conceptual schemecategory code.分类码分类阶元fēn lèi mǎ fēn lèi jiē yuán在级序分类系统中,每个分类单元都被确定为其中某个级别的分类阶元,例如,物种和属都是生物界最基本的分类...[继续阅读]

    Definition:Character displacement refers to the phenomenon where differences amongsimilar species whose distributions overlap geographically are accentuated in regions where thespecies co-occur but are minimized or lost where the species’ distributions do...[继续阅读]

    Definition: Chemical fossil. Any of various organic compounds found in ancient geologicalstrata that appear to be biological in origin and are assumed to indicate that life existed when therocks were formed. The presence of chemical fossils in Archaean st...[继续阅读]

    Definition: The Chengjiang biota of Yunnan,China,documents the earliest extensiveradiation of the Metazoa recorded in the fossil record.澄江生物群Chéng Jiāng shēng wù qún这一举世闻名的特异化石库发现于云南澄江帽天山,距今约5.3亿年,包括大量栩栩如生的奇异化石...[继续阅读]

    Definition: A group of organisms believed to have evolved from a common ancestor,according to the principles of cladistics.分支fēn zhī源于单一共同祖先的一群物种,由一个祖先种与所有它的后裔种组成,与“单系群”同义。Origin:“group of organisms evolved from a com...[继续阅读]

    Definition:A system of biological taxonomy based on the quantitative analysis ofcomparative data and used to reconstruct cladograms summarizing the (assumed) phylogeneticrelations and evolutionary history of groups of organisms.分支系统学fēn zhī xì tǒng xué当今的...[继续阅读]

    Definition:A tree diagram used to illustrate phylogenetic relationships.支序图zhī xù tú,分支图fēn zhī tú采用分支系统学原理和方法,以共同衍征为依据所得出的一种直观的等级分支图解。Example:The essentials of the concept and method of quantitative parsimony a...[继续阅读]

    Definition:Coevolution is“the change of a biological object triggered by the change of arelated object”.协同进化xié tóng jìn huà动植物为生存、进化和发展,并通过变异和特化达到彼此相适应。Origin:1965,from co-+evolution; supposedly introduced by Paul Ehrlich and Pe...[继续阅读]

    Definition:The process or result of becoming smaller or pressed together.压型化石yā xínghuà shí植物的茎干和叶子在沉积物中被压实而呈扁平状态的化石,可保存表皮、气孔等细胞形态。Origin:Circa 1400,from Middle French compression (14 century),from Latincompress...[继续阅读]