Examining the Extinction of the Barbary Lion and Its Implications for Felid Conservation
Grey boxes indicate estimated lion generations based on suggestions by: (a) Packer et al. , and (b) Hemmer . Black boxes are the five known generations in the European studbook  since the 1974 survey at Temara Zoo. Generational positions for two studbook maternal lines are illustrated for a female cub (white box) born to studbook female 270, and a young male (267) born to female 230, tracing to founder females 37 and 21 respectively.