Sometimes, an animal that was thought to be extinct will show up somewhere remote, and we can rejoice that we have another chance to save it. From the prehistoric fish that experts thought had been ...

Also grappling with complicated questions after finding a presumed-extinct species is botanist Wesley Knapp of the nonprofit NatureServe. This past May, after several days of hiking through the Chisos ...

The houting, a fish species that lived in North Sea estuaries and is officially extinct, turns out to be alive and well. Researchers extracted DNA from multiple houtings conserved in the museum, up to ...

“Because we found no species difference between houting of the past and today’s European whitefish, we do not consider the houting to be extinct,” Kroes said.

A species of clam is back from the dead. Known as Cymatioa cooki, the clam had only ever been found as a fossil, and scientists presumed that the species had been extinct for more than 40,000 years.

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A species of clam thought to be extinct has been found alive. The only previous evidence of the species was from a fossil collected in 1937.

Researchers in South Africa say they have rediscovered a mole species that has an iridescent golden coat and the ability to "swim" through sand dunes after it hadn't been seen for more than 80 ...

The desert rat-kangaroo, an extinct marsupial species, could actually be alive and ‘evading detection’ in Australia desert, new study says.