A proposed rank-free nomenclature that names clades by their ancestry.
Names are defined by reference to ancestors and descendants not ranks; it is controversial among taxonomists. The Linnaean system with ranks remains in widespread use.
Supporters argue it removes arbitrary ranks. Critics say ranks aid communication. Both systems coexist.
Example: some textbooks avoid rank names.
A proposed rank-free nomenclature that names clades by their ancestry.
PhyloCode is one of the 52 topics in Taxonomy & Biodiversity. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Taxonomy, Phylogenetic Classification, Paraphyletic and Polyphyletic.
Aves can be defined as the crown group containing modern birds.
Work through the Beginner topics in Taxonomy & Biodiversity first, such as Taxonomy, Binomial Nomenclature, Taxonomic Hierarchy, then return to PhyloCode. Advanced topics assume the Intermediate vocabulary.
The closest topics to PhyloCode are Taxonomy, Phylogenetic Classification, Paraphyletic and Polyphyletic, Monophyletic Groups. Comparing them side by side is a good way to see how the ideas connect.
Read the summary and the in-depth section, then use the quick check on the interactive lesson for PhyloCode. To practise the whole of Taxonomy & Biodiversity, use the Taxonomy & Biodiversity quiz.
PhyloCode: A proposed rank-free nomenclature that names clades by their ancestry. Taxonomy: The science of naming, describing and classifying organisms. Read both side by side and note what each one explains.
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Taxonomy and explain the difference aloud. Finally, take the Taxonomy & Biodiversity quiz and come back to this page for any question you miss.
The science of naming, describing and classifying organisms.
🗂️ Taxonomy & BiodiversityGroups organisms by evolutionary relationships so that taxa reflect common ancestry.
🗂️ Taxonomy & BiodiversityParaphyletic groups omit some descendants; polyphyletic groups lack the most recent common ancestor.
🗂️ Taxonomy & BiodiversityA group containing an ancestor and all of its descendants, called a clade.
🗂️ Taxonomy & Biodiversity