👉 Nonspecies is a term used in zoology to describe a species that has not been recognized as a separate entity by other taxa. In other words, it refers to a species that does not exist within the current taxonomic classification system, such as the Kingdom of Plantae (Plantae) or the Kingdom Animalia (Animalia). Nonspecies include extinct and/or unknown species that were once part of larger groups but have been removed from their original ecological niche.