Which taxonomic rank comes directly above species?

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A nautilus mollusk with a spiral, brown-and-white striped shell and numerous white tentacles extending from its soft body, set against a dark background. — species A nautilus (*Nautilus*) floating in the water column of the ocean.

The taxonomic rank that comes directly above species is the genus.123

In biological classification, the genus is a rank that consists of structurally or phylogenetically related species or, in some cases, a single isolated species. Together, the genus and species form the basis of binomial nomenclature, where the genus name is the first word of an organism's scientific name and is always capitalized.1