Chapter 6   Theory and Practice of Bilogical Classification


    Group 이나 class에 속하는 자연에 있는 목적물 즉 새, 나비, 나무, 풀, 수역, 식물의 씨 등은 하나의 검색용 속성을 가지고 있거나 혹은 공유하는 수많은 속성을 가지고 있다.



Some basic principles of classification

      General rules of classification

      Additional rules for the classification of organisms

      Special classification


Criteria of zoological classification

Classification and phylogeny

      Taxonomic character


       Geographic distribution

The three schools of macrotaxonomy



      Evolutionary classification


Is a classification a theory ?

The function of a classification

      A classification is an index to stored information

      A good classification has heuristic properties

      Classifications permit the making of generalization

      A classification has exlanatory powers

What is the best classification

The steps in taxonomic procedure

      Polythetic taxa

The limitation of taxa

Hierarchical classification

      The Linnaeans hierarchy

Higer categories and higher taxa

      The Genus

      The Family

      Orders, Classes, and Phyla

The process of ranking

Relationship and similarity


      Convergence in characters

Difficulties encountered in macrotaxonomy

      Mosaic evolution


The improvement of existing classification


Phylogenetic trees

The importance of sound classification