Abstract

It has been claimed that the ideas contained in the panbiogeographic methodology and synthesis of Croizat (1952-1964) have been greatly extended to result in the vicariance cladistic approach to the study of historical biogeography (Sneath, 1982:213; also Patterson, 1981a, b). Both Craw (1982) and Croizat (1982) have argued that panbiogeography and vicariance cladistics are distinctive and rival research programs. A recent insightful analysis of the nature of branching diagrams or cladograms (Nelson and Platnick, 1981) offers a means of comparing these contradictory views.

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