1720 Bibliotheca Biblica I. i. 114 There are a great number of sub-classes [of reptiles] curiously explained by him.

1819 G. Samouelle Entomologist's Compend. 77 Dr. Leach considered the Malacostraca and Entomostraca as sub~classes.

1857 A. Gray First Lessons Bot. (1866) 177 Series, Class, Subclass, Order, or Family, Suborder, Tribe, Subtribe, Genus, Subgenus or Section, Species, Variety.

1880 A. Günther Introd. Study of Fishes 65 The lowermost sub-class of fishes, which comprises one form only, the Lancelet.

1952 P. Mann Systematics Flowering Plants i. 47 Linnaeus recognized 24 Sub-classes based mainly on the arrangement of stamens.

2000 J. Mann Murder, Magic, & Med. (rev. ed.) iii. 115 His research led ultimately to the recognition of the discrete nicotinic subclass of acetylcholine receptors.

1852 Lect. Results Great Exhib.1851 18 The Sub-class A, of manufacturing machines and tools, included the Heads 1, machinery for spinning and weaving;..2, paper-making; 3, printing.

1880 Building News 30 July 121/1 Students may elect to be examined under any one of the three sub-classes of a table which has been arranged on the broad lines of the usual branches of surveyors' practice.

1913 Times 30 July 5/1 The criminal class is composed of many classes and subclasses.

1977 Computerworld 4 July 8/1 The number of documents and subclasses in the patent office files is just the tip of the iceberg.

1993 Western Jrnl. Med. (Nexis) Oct. 465 The most common presentation of psychogenic amnesia is the fugue state, a subclass of dissociative illness.

2009 R. Hassig & K. Oh Hidden People N. Korea vii. 198 In 1958, the entire population was subjected to political classification, with successive classifications culminating in a system of three classes and fifty-one subclasses.

1835 C. F. Partington Brit. Cycl. Nat. Hist. I. 610/2 The author next proceeded to determine what should be the signs for subclassing the vast number of plants then known to botanists.

1897 16th Ann. Rep. Bureau Amer. Ethnol. 1894–5 72 The motive must be subclassed as sortilegic.

1905 Pharmaceut. Jrnl. 28 Jan. 115/1 True fruits are subclassed into indehiscent and dehiscent, and each of these again into monocarpellary and polycarpellary.

1914 Dietetic & Hygiene July 312/1 Machinists come under a single heading; but each machinist is sub-classed according to the particular work he is doing.

1969 Jrnl. Wildlife Managem. 33 187/2 Adult females were further sub-classed as lactating when milk could be expressed from their teats.

2006 Plant Physiol. 141 598 sRNAs are subclassed according to their origin.