| 单词 | 远祖 |
| 释义 | 〔cladogram〕A branching, treelike diagram in which the endpoints of the branches represent specific species of organisms. It is used to illustrate phylogenetic relationships and show points at which various species have diverged from common ancestral forms.进化分枝图：一种分叉的树状图，其分枝的终点代表生物的特定品种。其被用来说明种系发展的关系，并显示在何处不同的物种从同一远祖形式分化〔eohippus〕A small, herbivorous, extinct mammal of the genusHyracotherium (or Eohippus ) from the Eocene Epoch of the western United States, having four-toed front feet and three-toed hind feet and related ancestrally to the horse. 始祖马：始新世产于美国西部的一种属于蹄兔 （或 始祖马 )属的哺乳动物，已灭绝，体型小，食草，前蹄四趾，后蹄三趾，为马的远祖 〔cladogenesis〕The evolutionary change and diversification resulting from the branching off of new taxa from common ancestral lineages.系枝进化：从共同远祖世系分支出的新类别而形成的进化和多样化 |
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