69 species had been assessed by the IUCN in 2006. If a local stock or population becomes extinct, the species as a whole has not become extinct, but extirpated from that local area. Examples of stocks and subdivisions of world populations assessed separately by the IUCN for their conservation status are: Marsh deer (three populations assessed) Blue whale, North Pacific and North Atlantic stocks Bowhead whale, Balaena mysticetus (five populations assessed, from critically endangered to LR/cd) Lake sturgeon, Acipenser fulvescens, Mississippi & Missouri Basins population assessed as vulnerable Wild common carp, Cyprinus carpio (distribution in the River Danube) Black-flanked rock-wallaby Petrogale lateralis (MacDonnell Ranges population and Western Kimberly population) The IUCN also lists countries where assessed species, subspecies or geographic populations are found, and from which countries they have been extirpated or reintroduced. See also List of extinct animals Threatened species Extinct in the wild References Extinction