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(ˈklæd ɪz əm, ˈkleɪ dɪz-)

the cladistic method of classification.
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in a point of view antagonistic to cladism, Cronquist (1987) argued that
Arguments have centered on how representative the fossil record is and the usefulness of techniques such as cladism and specially molecular analysis (Bergstrom 1986) whose varied results have shown it to be premature (Hou and Bergstrom 1995, Fortey et al.
The primary alternative system is the phylogenetic system of hierarchy which is derived from cladism, and includes aspects both divergent and compatible with the Linnaean system.