Figure 58.3 Species Extinctions: Going, Going . . . (A) The heath hen (left) became extinct in 1932. In 2008 the pygmy tarsier (right) was discovered in an Indonesian national park after having been presumed extinct for 85 years. (B) The pie chart shows the breakdown by extinction risk category of 59,033 species assessed by the International Union for Conservation of Nature. The bar graph shows the number of species in the various extinction risk categories (three of which are together termed “threatened”) in taxonomic groups that have been comprehensively assessed.