cladisticsyoudaoicibaDictYouDict[cladistics 词源字典]
"A method of classification of animals and plants that aims to identify and take account of only those shared characteristics which can be deduced to have originated in the common ancestor of a group of species during evolution, not those arising by convergence", 1960s: from clade + -ist + -ics.[cladistics etymology, cladistics origin, 英语词源]