Editing Sui generis (section)

==Biology==
{{unreferenced section|date=July 2017}}
In the [[Taxonomy (biology)|taxonomical]] structure "[[genus]] → [[species]]", a species is described as {{lang|la|sui generis}} if its genus was created to classify it (i.e., its uniqueness at the time of classification merited the creation of a new genus, the sole member of which was initially the {{lang|la|sui generis}} species). A species that is the sole ''extant'' member of its genus (e.g., the genus ''[[Homo (genus)|Homo]]'') is not necessarily {{lang|la|sui generis}}; extinctions may have eliminated other congeneric species. A ''sui generis'' genus may also be called a [[monotypic genus]].