Order (biology)

In scientific classification used in biology, the order (Latin: ordo, plural ordines) is a taxonomic rank between class and family. The superorder is a rank between class and order. Exact details of formal nomenclature depend on the Nomenclature Code which applies.

Zoology
In zoology, the Linnaean orders were used more consistently. That is, the orders in the zoology part of the Systema Naturae refer to natural groups. Some of his ordinal names are still in use (e.g. Lepidoptera for the order of moths and butterflies, or Diptera for the order of flies, mosquitoes, midges, and gnats).