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Osman Hamdi Bey cropped. Tortoise Trainer oil on canvas cm According to modern researchers Bettelheim Matthew and Ertan Taskavak The Tortoise and the Tulip Testudo graeca ibera and Osman Hamdi's The Tortoise Trainer Bibliotheca Herpetologica pp the animals portrayed are Testudo graeca ibera variety of the Spurthighed Tortoise