â¢ TURDUS MIGRATORIUS (noun). The noun TURDUS MIGRATORIUS has 1 sense: 1. large American thrush having a rust-red breast and abdomen. Familiarity information: TURDUS MIGRATORIUS used as a noun is very rare. TURDUS MIGRATORIUS (noun). The noun TURDUS MIGRATORIUS has 1 sense: 1. large American thrush having a rust-red breast and abdomen. Familiarity information: TURDUS MIGRATORIUS used as a noun is very rare.
He said: Jonathan is the sole survivor of three tortoises that arrived on St Helena Island in 1882. He was already mature when he arrived and was at least 50-years-old. Therefore his minimum age is 176-years-old. He is the oldest inhabitant on St Helena and is claimed to be the oldest living tortoise in the world. He lives in the grounds of Plantation House which is the governor's residence with five other tortoises who are much younger than him.
Scientists didn't actually kill the world's oldest animal, a clam, just to find out how old it was. Shell valves from a specimen of Arctica islandica that was found to have lived for approximately 507 years are pictured here. The creature's death has generated some consternation about marine researchers that looks a bit overblown.