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superkingdom
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superkingdom

taxon
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The term "superkingdom" refers to a high-level taxonomic rank used in some systems for classifying life. Historically, life was divided into two kingdoms: plants and animals. With the advent of microscopy, new forms of life were discovered, leading to proposals for additional kingdoms.

A significant development was the distinction between prokaryotes (organisms lacking a nucleus) and eukaryotes (organisms with a nucleus). This led to the concept of two superkingdoms: Prokaryota and Eukaryota. The Prokaryota included the kingdom Monera, encompassing bacteria, blue-green algae, and archaea. The Eukaryota comprised all other life forms.

More recent classification systems, such as the three-domain system proposed by Carl Woese, divide life into Bacteria, Archaea, and Eukarya, with each domain representing a distinct lineage.1234

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4 Britannica Sources
  1. bacteria - Taxonomic rankings
  2. archaea
  3. taxonomy - Division of organisms into kingdoms
  4. protist - Defining the protists

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