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Institute/Center: CSIC - Real Jardin Botanico de Madrid (RJB)

Author: Pablo Vargas

The gigantism of the Galápagos tortoises is surprising not only because of their size (more than 200 kg), but also because they evolved from very small South American tortoises that dispersed millions of years ago. In the photograph of a giant tortoise (Geochelone nigra), Galapagos Islands, Ecuador. Source: The Tree of Life: systematics and evolution of living organisms, http://digital.csic.es/handle/10261/193541

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The Tree of Life: systematics and evolution of living organisms