The legion, in biological taxonomy, is a non-obligatory
rank within the Linnaean hierarchy which is subordinate to the class but superordinate to the cohort. It consists of a group of related
orders and has been employed in some classifications of birds and mammals.
Legions may be grouped into superlegions or subdivided into sublegions, and these again into infralegions.
| Taxonomic ranks | ||||||||
|---|---|---|---|---|---|---|---|---|
| Domain or | Magnorder | |||||||
| Superkingdom | Superphylum/Superdivision | Superclass | Superorder | Superfamily | Superspecies | |||
| Kingdom | Phylum/Division | Class | Order | Family | Tribe | Genus | Species | |
| Subkingdom | Subphylum | Subclass | Cohort | Suborder | Subfamily | Subtribe | Subgenus | Subspecies |
| Branch | Infraphylum | Infraclass | Legion | Infraorder | Alliance | Infraspecies | ||
| Microphylum | Parvclass | Parvorder | ||||||
See also
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