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...[繼續(xù)閱讀]

    Definition: A general concept that marks divisions or coordinations in a conceptual schemecategory code.分類碼分類階元fēn lèi mǎ fēn lèi jiē yuán在級序分類系統(tǒng)中,每個分類單元都被確定為其中某個級別的分類階元,例如,物種和屬都是生物界最基本的分類...[繼續(xù)閱讀]

    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...[繼續(xù)閱讀]

    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...[繼續(xù)閱讀]

    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這一舉世聞名的特異化石庫發(fā)現(xiàn)于云南澄江帽天山,距今約5.3億年,包括大量栩栩如生的奇異化石...[繼續(xù)閱讀]

    Definition: A group of organisms believed to have evolved from a common ancestor,according to the principles of cladistics.分支fēn zhī源于單一共同祖先的一群物種,由一個祖先種與所有它的后裔種組成,與“單系群”同義。Origin:“group of organisms evolved from a com...[繼續(xù)閱讀]

    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.分支系統(tǒng)學(xué)fēn zhī xì tǒng xué當(dāng)今的...[繼續(xù)閱讀]

    Definition:A tree diagram used to illustrate phylogenetic relationships.支序圖zhī xù tú,分支圖fēn zhī tú采用分支系統(tǒng)學(xué)原理和方法,以共同衍征為依據(jù)所得出的一種直觀的等級分支圖解。Example:The essentials of the concept and method of quantitative parsimony a...[繼續(xù)閱讀]

    Definition:Coevolution is“the change of a biological object triggered by the change of arelated object”.協(xié)同進化xié tóng jìn huà動植物為生存、進化和發(fā)展,并通過變異和特化達(dá)到彼此相適應(yīng)。Origin:1965,from co-+evolution; supposedly introduced by Paul Ehrlich and Pe...[繼續(xù)閱讀]

    Definition:The process or result of becoming smaller or pressed together.壓型化石yā xínghuà shí植物的莖干和葉子在沉積物中被壓實而呈扁平狀態(tài)的化石,可保存表皮、氣孔等細(xì)胞形態(tài)。Origin:Circa 1400,from Middle French compression (14 century),from Latincompress...[繼續(xù)閱讀]