A new species of giant tortoise has been discovered in the Galapagos after DNA testing found animals living on one island had not yet been recorded, Ecuador's environment ministry said.
Researchers compared the genetic material of tortoises currently living on San Cristobal with bones and shells collected in 1906 from a cave in the island's highlands and found them to be different.
Galapagos Conservancy said in a newsletter that the Chelonoidis chathamensis species is"almost certainly extinct" and that the island had in fact been home to two different varieties of tortoise, one living in the highlands and another in the lowlands. The archipelago was made famous by British geologist and naturalist Charles Darwin's observations on evolution there.
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