Oldest known animal on earth..?

Hello Friend,

Please tell me, What is the oldest known animal on earth..?

Aldabra giant tortoise, died at an estimated age of 255 in March 2006 in Alipore Zoo, Kolkata, India. If verified, it will have been the oldest terrestrial animal in the world. Tu'i Malila, a radiated tortoise, died at an age of 188 years in May 1965, at the time the oldest verified vertebrate.

thanks for advise....