Family (biology)
In biological classification, family (Latin: familia) is
- a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the prefix sub-: subfamily (Latin: subfamilia).
- a taxonomic unit, a taxon, in that rank. In that case the plural is families (Latin familiae)
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- Example: Walnuts and hickories belong to Juglandaceae, the walnut family.
What does and does not belong to each family is determined by a taxonomist. Similarly for the question if a particular family should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing a family. Some taxa are accepted almost universally, while others are recognised only rarely.
Famous quotes containing the word family:
“It is hereby earnestly proposed that the USA would be much better off if that big, sprawling, incoherent, shapeless, slobbering civic idiot in the family of American communities, the City of Los Angeles, could be declared incompetent and placed in charge of a guardian like any individual mental defective.”
—Westbrook Pegler (1894–1969)