What term describes the taxonomic situation where the Genus Setonix contains only the single living species S. brachyurus?

Answer

Monotypic

When a biological genus is established to contain only one extant species, it is formally recognized as being **monotypic**. The Genus *Setonix* fits this description perfectly, housing only *Setonix brachyurus*. This taxonomic uniqueness signifies that the quokka lineage has diverged sufficiently from other small macropods to warrant its own distinct genus classification within the Macropodidae family, setting it apart from groups like those in the *Macropus* genus.

What term describes the taxonomic situation where the Genus Setonix contains only the single living species S. brachyurus?
taxonomyanimalmammalQuokka