Once the top-level taxonomic
classification of life on Earth
, Kingdoms are now subordinate to the Three Domains
Note that virii
are not included here. Many biologists feel that virus
es are not "alive".
Refinements on the Five Kingdom model divide Monera into the kingdoms of Eubacteria and Archaebacteria, Protista into Archaezoa and Protozoa, and add a whole new kingdom of Chromista, for a total of 8 kingdoms.