https://www.vice.com/en_us/article/v7djma/a-new-galapagos-tortoise-species-may-have-just-been-discovered

The island in the Galapagos upon which Charles Darwin first landed in 1835 was once thought to be home to a single lineage of giant tortoise. But a team of researchers from across the world has identified a second, genetically distinct lineage there—one they believe has long been extinct.

The finding is laid out in a new paper published last month in the peer-reviewed journal Hereditary, the work of a group of 12 scientists from Newcastle University, Yale, MIT, the non-profit Galapagos Conservancy, and more. If the findings are confirmed to represent a new species, the living tortoises on the island may need a new name, the researchers say.