Aldabra giant tortoise
Large tortoises are among the longest-lived animals. Some individual Aldabra giant tortoises are thought to be over 200 years of age, but this is difficult to verify because they tend to outlive their human observers. Adwaita was reputedly one of four brought by British seamen from the Seychelles Islands as gifts to Robert Clive of the British East India Company in the 18th century, and came to Calcutta Zoo in 1875. At his death in March 2006 at the Kolkata (formerly Calcutta) Zoo in India, Adwaita is reputed to have reached the longest ever measured lifespan of 255 years (birth year 1750). Today, Jonathan, a Seychelles giant tortoise ("A. g. hololissa"), is thought to be the oldest living giant tortoise at the age of years and Esmeralda is second at the age of years, since the death of Harriet at 176, a Galapagos giant tortoise. Esmeralda is an Aldabra giant tortoise.
Tyrannosauridae
Other tyrannosaurids exhibit extremely similar growth curves, although with lower growth rates corresponding to their lower adult sizes. Compared to albertosaurines, "Daspletosaurus" showed a faster growth rate during the rapid growth period due to its higher adult weight. The maximum growth rate in "Daspletosaurus" was per year, based on a mass estimate of in adults. Other authors have suggested higher adult weights for "Daspletosaurus"; this would change the magnitude of the growth rate, but not the overall pattern. The youngest known "Albertosaurus" is a two-year-old discovered in the Dry Island bonebed, which would have weighed about and measured slightly more than in length. The specimen from the same quarry is the oldest and largest known, at 28 years of age. The fastest growth rate is estimated to occur around 12–16 years of age, reaching per year, based on a adult, which is about a fifth of the rate for "T.-rex". For "Gorgosaurus", the calculated maximum growth rate is about during the rapid growth phase, which is comparable to that of "Albertosaurus".