The marginated tortoise (Testudo marginata) is a species of tortoise found in Greece, Italy and the Balkans in southern Europe. It is the largest European tortoise, reaching a weight of up to 5 kg (11 lb) and a length of 35 cm (14 in). Its shell is oblong and has a notable thickness around the middle of the body. The posterior end of the shell has a saw-like formation, flanged outward like a bell. The carapaces of adult specimens are almost completely black, with yellow highlights.