A "B plan" for Biodiversity ?

The most threatened mammal group on Earth, Madagascar’s five endemic lemur families (lemurs are found nowhere else), represent more than 20% of the world’s primate species and 30% of family-level diversity.

See also

SCIENCE - Volume 343, no. 6173 pp. 842-843 - February 2014

C. Schwitzer, R. A. Mittermeier, S. E. Johnson, G. Donati, M. Irwin, H. Peacock, J. Ratsimbazafy, J. Razafindramanana, E. E. Louis Jr., L. Chikhi, I. C. Colquhoun, J. Tinsman, R. Dolch, M. LaFleur, S. Nash, E. Patel, B. Randrianambinina, T. Rasolofoharivelo, P. C. Wright