Self-similarity in biological classifications.

Abstract excerpt

Size distributions of supraspecific taxa, e.g. genera, measured as the number of included subtaxa, e.g. species, are found to follow a power law. This behaviour has been verified for a number of taxa of different size and taxonomic rank, thus suggesting a fractal structure of biological classifications. This is regarded as probably dependent on evolutionary processes shaping the phylogenetic tree, especially...

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