The traditional taxonomy of the genus Coelogyne is still disputed.
The more traditional taxonomy of the family, particularly the split into four groups, has been challenged by recent research.
The above is considered the traditional taxonomy for the spiral-horned antelope group, but recently the relationships between the various species has changed somewhat.
In traditional taxonomy, birds were considered a separate "class" that had evolved from dinosaurs.
Polyphyletic groups often have their origin in traditional taxonomy, based on similar morphological characteristics.
Non-cryptic species can generally be resolved by either traditional or molecular taxonomy without ambiguity.
Kosovo has upset the traditional taxonomy and replaced it with what appears to be chaos.
There is a great similarity with the traditional taxonomy, except for the Vandoideae, but on lower levels, some matters are still unresolved.
All living birds are Neornithes, a subclass in traditional taxonomy.
This contrasts with traditional taxonomies in which the hierarchy of categories is fixed and unchanging.