urkingdomn.
/ˈʊəkɪŋdəm/ Taxonomy.
One of the highest taxonomic groups of organisms, proposed in some classifications, spec. each of the three groups comprising the archaebacteria, the eubacteria, and the eukaryotes.
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the world > life > biology > taxonomy > taxon > [noun] > kingdom or sub-kingdom
kingdom1624
family1651
race1697
reign1744
subkingdom1825
province1866
urkingdom1977
domain1990
1977 Woese & Fox in Proc. National Acad. Sci. U.S.A. 74 5088/2 The highest phylogenetic unit in the prokaryotic domain we think should be called an ‘urkingdom’—or perhaps ‘primary kingdom’.
1983 Nature 10 Feb. 512/1 The recently defined novel order Thermoproteales, which, together with the order represented by Sulfolobus, forms a distinct division of the urkingdom of the archaebacteria.
1985 Proc. National Acad. Sci. U.S.A. 82 3716/1 Photosynthetic bacteria have previously been classified in two urkingdoms.
This entry has not yet been fully updated (first published 1993; most recently modified version published online June 2018).
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