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AbstractHennig’s phylogenetic system is characterized by an asymmetry between (sexually reproducing) species that form tokogenetic systems, versus monophyletic taxa that form a phylogenetic system. This was claimed to reflect a conflict between two hierarchies, i.e.
Olivier Rieppel
exaly +3 more sources
Willi Hennig’s dichotomization of nature
Cladistics, 2011Two formal assumptions implied in Willi Hennig's "phylogenetic systematics" were repeatedly criticized for not being biologically grounded. The first is that speciation is always dichotomous; the second is that the stem-species always goes extinct when its lineage splits into two daughter species.
Olivier Rieppel
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