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Table 1 Taxonomic-ranks found in NCBI Taxonomy

From: Taxallnomy: an extension of NCBI Taxonomy that produces a hierarchically complete taxonomic tree

Level Name Abbrev.a Prior.b # of taxac # of lineagesd Level Name Abbrev.a Prior.b # of taxac # of lineagesd
1 Superkingdom spKin 1 4 728,071 22 Tribe Tri 15 2113 158,026
2 Kingdom Kin 8 11 648,200 23 Subtribe sbTri 24 497 34,578
3 Subkingdom sbKin 21 1 46,229 24 Genus Gen 2 84,642 726,932
4 Superphylum spPhy 38 1 70 25 Subgenus sbGen 26 1596 18,815
5 Phylum Phy 6 149 722,901 26 Section Sec 30 436 5302
6 Subphylum sbPhy 9 26 573,559 27 Subsection sbSec 36 21 314
7 Infraphylum inPhy 40 0 0 28 Series Ser 37 9 174
8 Superclass spCla 20 6 73,676 29 Subseries sbSer 41 0 0
9 Class Cla 7 394 715,953 30 Species group Sgr 27 326 11,709
10 Subclass sbCla 10 154 306,936 31 Species subgroup sbSgr 31 124 964
11 Infraclass inCla 14 18 177,636 32 Species Spe 3 507,981 726,733
12 Cohort Coh 16 5 155,939 33 Forma specialis Fsp 32 714 829
13 Subcohort sbCoh 29 3 8220 34 Subspecies sbSpe 25 24,809 29,339
14 Superorder spOrd 19 55 101,075 35 Varietas Var 28 8037 8359
15 Order Ord 5 1518 723,930 36 Subvariety sbVar 39 5 5
16 Suborder sbOrd 12 362 220,298 37 Forma For 34 520 521
17 Infraorder inOrd 17 130 140,252 38 Serogroup Srg 35 143 356
18 Parvorder prOrd 23 25 43,046 39 Serotype Srt 18 1174 107,446
19 Superfamily spFam 13 843 191,499 40 Strain Str 22 42,857 43,064
20 Family Fam 4 8658 726,481 41 Isolate Iso 33 641 641
21 Subfamily sbFam 11 2936 270,677       
  1. aRank name abbreviation
  2. bRank priority order during the rank assignment step
  3. cNumber of distinct taxa in the rank
  4. dNumber of leaf lineages with the rank