Abstract
Recent progresses in phylogenies inference using molecular markers bring closer a scientific prospect long-awaited by biologists: the carrying out of a "natural", objective, and thus universal classification. Much difficulties are still to be overcomed, to figure out the one and only actual phylogeny, as well as to translate it into classification. Nonetheless, the many taxonomical revisions that have already been published on molecular bases seem to me very promising, even though some of them disturb sometimes our habits and they can not be considered as definitive