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2. Domain (biology) - Wikipedia

   en.wikipedia.org/wiki/Domain_(biology)

   In biological taxonomy, a domain (/ d ə ˈ m eɪ n / or / d oʊ ˈ m eɪ n /) (Latin: regio [1]), also dominion, [2] superkingdom, realm, or empire, is the highest taxonomic rank of all organisms taken together. It was introduced in the three-domain system of taxonomy devised by Carl Woese, Otto Kandler and Mark Wheelis in 1990. [1]

3. Taxonomy (biology) - Wikipedia

   en.wikipedia.org/wiki/Taxonomy_(biology)

   Taxonomy is that part of Systematics concerned with topics (a) to (d) above. A whole set of terms including taxonomy, systematic biology, systematics, scientific classification, biological classification, and phylogenetics have at times had overlapping meanings – sometimes the same, sometimes slightly different, but always related and ...

4. Evolutionary grade - Wikipedia

   en.wikipedia.org/wiki/Evolutionary_grade

   The green box (central) may represent an evolutionary grade (paraphyletic), a group united by conservative anatomical and physiological traits rather than phylogeny. The flanking red and blue boxes are clades (i.e., complete monophyletic subtrees). A grade is a taxon united by a level of morphological or physiological complexity.

5. Taxonomy mnemonic - Wikipedia

   en.wikipedia.org/wiki/Taxonomy_mnemonic

   The hierarchy of scientific classification. Taxonomy mnemonics are used to memorize the scientific classification applied in taxonomy. They are usually constructed with a series of words that begin with the letters KPCOFGS, corresponding to the initials of the primary taxonomic ranks.

6. List of animal classes - Wikipedia

   en.wikipedia.org/wiki/List_of_animal_classes

   The following is a list of the classes in each phylum of the kingdom Animalia.There are 107 classes of animals in 33 phyla in this list. However, different sources give different numbers of classes and phyla.

7. Evolutionary taxonomy - Wikipedia

   en.wikipedia.org/wiki/Evolutionary_taxonomy

   Evolutionary taxonomy, evolutionary systematics or Darwinian classification is a branch of biological classification that seeks to classify organisms using a combination of phylogenetic relationship (shared descent), progenitor-descendant relationship (serial descent), and degree of evolutionary change.

8. Linnaean taxonomy - Wikipedia

   en.wikipedia.org/wiki/Linnaean_taxonomy

   Linnaean taxonomy can mean either of two related concepts: The particular form of biological classification (taxonomy) set up by Carl Linnaeus, as set forth in his Systema Naturae (1735) and subsequent works. In the taxonomy of Linnaeus there are three kingdoms, divided into classes, and the classes divided into lower ranks in a hierarchical order.

9. Tree of life (biology) - Wikipedia

   en.wikipedia.org/wiki/Tree_of_life_(biology)

   In 2015, the third version of TimeTree was released, with 2,274 studies and 50,632 species, represented in a spiral tree of life, [29] free to download. In 2015, the first draft of the Open Tree of Life was published, in which information from nearly 500 previously published trees was combined into a single online database, free to browse and ...