A genus's a low-level taxonomic rank used in the classification of living and fossil organisms. Other well-known taxonomic ranks are,kingdom, phylum, class, order, family, and species, with genus fitting between family and species. Or a taxonomic unit (a taxon), in that rank. In this case the plural's genera. The term comes from Latin genus "descent, family, type, gender" (plurals: genera), cognate with - genos, "race, stock, kin". Like for the other well-known taxonomic ranks, mentioned ab… (More on Genus)