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Six Kingdoms may refer to: In biology, a scheme of classifying organisms into six kingdoms: Proposed by Carl Woese et al.: Animalia, Plantae, Fungi, Protista, Archaea/Archaeabacteria, and Bacteria/Eubacteria; Proposed by Thomas Cavalier-Smith: Animalia, Plantae, Fungi, Chromista, Protozoa and Eukaryota
In this scheme they introduced two superkingdoms of Prokaryota and Eukaryota and seven kingdoms. Prokaryota have two kingdoms: Bacteria and Archaea. (This was based on the consensus in the Taxonomic Outline of Bacteria and Archaea, and the Catalogue of Life). The Eukaryota have five kingdoms: Protozoa, Chromista, Plantae, Fungi, and Animalia.
By 1998, Cavalier-Smith had reduced the total number of kingdoms from eight to six: Animalia, Protozoa, Fungi, Plantae (including red and green algae), Chromista, and Bacteria. [44] Five of Cavalier-Smith's kingdoms are classified as eukaryotes as shown in the following scheme: Eubacteria; Neomura. Archaebacteria; Eukaryotes. Kingdom Protozoa
Phylogenetic and symbiogenetic tree of living organisms, showing the origins of eukaryotes and prokaryotes. The two-empire system (two-superkingdom system) was the top-level biological classification system in general use from the early 20th century until the establishment of the three-domain system (which itself is currently being challenged by the two-domain system).
These are the approximate categories which present monarchies fall into: [citation needed]. Commonwealth realms.King Charles III is the monarch of fifteen Commonwealth realms (Antigua and Barbuda, Australia, The Bahamas, Belize, Canada, Grenada, Jamaica, New Zealand, Papua New Guinea, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Solomon Islands, Tuvalu, and the United ...
This is a list of kingdoms and royal dynasties, organized by geographic region. Note: many countries have had multiple dynasties over the course of recorded history. This is not a comprehensively exhaustive list and may require further additions or historical verification.
The full title of the 10th edition (1758), which was the most important one, was Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, which appeared in English in 1806 with the title: "A General System of Nature, Through the Three Grand Kingdoms of Animals ...
The periodization of ancient Egypt is the use of periodization to organize the 3,000-year history of ancient Egypt. [1] The system of 30 dynasties recorded by third-century BC Greek-speaking Egyptian priest Manetho is still in use today; [2] however, the system of "periods" and "kingdoms" used to group the dynasties is of modern origin (19th and 20th centuries CE). [3]