Reuters are reporting that Lonesome George has died. George was the last of a the Pinta Island subspecies of Galapagos giant tortoises. With him gone his kind are now extinct. There had been attempts to mate him with female tortoises from related subspecies, but their eggs failed to hatch.
Lonesome George's exact age is unknown, but he is believed to have been around a 100 years old.
image source (from a Guardian article reporting false hope in 2005 that he would be able to breed with the tortoises from a related subspecies)