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subkingdom

ˈsubˌkingdom
  [sub- 7 b.]
  One of the primary groups into which the animal and vegetable kingdoms are divided.

1825 W. S. Macleay Annulosa Javan. 5 If we..descend from the consideration of the kingdom Animalia to the department or sub-kingdom Annulosa. 1851 Carpenter Man. Phys. (ed. 2) 131 These Red Corpuscles can scarcely be said to exist in the blood of Invertebrated animals, and their proportion in the blood of Vertebrata varies considerably in the several groups of that sub-kingdom. 1870 H. A. Nicholson Man. Zool. (1875) 16 The six types or plans of structure, upon one or other of which all known animals have been constructed, are technically called ‘sub⁓kingdoms’, and are known by the names Protozoa, Cœlenterata, Annuloida, Annulosa, Mollusca, and Vertebrata. 1877 Dawson Orig. World x. 213 The three Cuvierian sub⁓kingdoms of the Radiata, Articulata, and Mollusca. 1900 B. D. Jackson Gloss. Bot. Terms, Subkingdom, the main division of a kingdom, a primary botanic division, as Phanerogams and Cryptogams.

Oxford English Dictionary

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