On our trip to The Galapagos Islands, we stopped at the Charles Darwin Research Station on Santa Cruz Island, to see its most famous resident, Lonesome George. He was a male Pinta Island tortoise(Chelonoidis nigra abingdonii) and the last known individual of the subspecies.
We visited in Mid-May (2012), he passed away June (2012). The Pinta tortoise was pronounced functionally extinct. (update: In November 2012 they found a possible subspecies of George)
He’s in the upper right corner of the photo below.