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Definitions (28)
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anagenesis
Evolutionary changes in attributes of a species that do not involve branching or speciation.
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daughter species
during speciation, either through cladogenesis or reticulate speciation. In the phylogenetic system, only species can be ancestral taxa. Groups of species are specifically excluded from being ancestra [..]
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artificial taxon
A taxon that does not correspond to a unit involved in the evolutionary process or to a unit of evolutionary history (see also grade). There two kinds of artificial groups, paraphyletic and polyphylet [..]
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Arrangement
A special type of classification for a series of taxa whose phylogenetic history is unknown because no one has ever reconstructed the evolutionary history of the group. Many current classifications ar [..]
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category
A relative position in a hierarchical biological classification. The category of a taxon indicates its relative place in the hierarchy of the classification. The Linnaean hierarchy is the most common [..]
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cladogenesis
Branching or divergent evolution caused by speciation. Results in two or more branches on the phylogenetic tree where earlier only a single branch existed. A species resulting from cladogenesis has on [..]
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cladogram
Phylogenetic trees that have clearly implied patterns of ancestry and descent, and a relative time axis. A cladogram is one kind of phylogenetic tree, a common ancestry tree. For some phylogenetic sys [..]
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natural classifications
contain only monophyletic groups and/or species. This type of classification is logically consistent with the phylogenetic relationships of the taxa being classified (as they are currently understood) [..]
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