A tadpole of a frog, Frankixalus jerdonii, belonging to a newly found genus of frogs, seen under a microscope in Systematics Lab at the University of Delhi, Department of Environmental Studies, in New Delhi on January 14, 2016. Scientists have discovered the new genus of tree frogs in India thought to have been extinct for over a century. (Photo by S.D. Biju/AP Photo)
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