- In biological classification, class (Latin: classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank. It is a group of related taxonomic orders. Other well-known ranks in descending order of size are life, domain, kingdom, phylum, order, family, genus, and species, with class ranking between phylum and order.
By their fruit you will recognize them. Do people pick grapes from thornbushes, or figs from thistles?
Matthew 7:16 NIV