Natural extinction survive in a man's control. Not found in nature anymore. For example, Barbary lion (possibly extinction) Wyoming Toad Hawaiian check box.
Natural extinction Survivors, but the control of humans. No longer found in nature such as the Barbary Lion. (Possibly extinct) Hawaiian Crow, Wyoming Toad.
Extinct natural survive but in the control of human beings, not found in nature. For example, busto arsizio (possibly extinct). The Hawaiian, Wyoming toad.