11.   Fossil evidence strongly suggests it was used to butcher and clean extinct rhinos, elephants, and horses.

12.   In it, Pimm and his colleagues, drawing on fossil evidence, calculated the background rate of past extinctions.

13.   Indirect fossil evidence, such as the burrows found by this team, have always been controversial because some natural, non-biological processes can produce similar structures.

14.   Looking at both gene and fossil evidence gives us a better understanding of evolutionary history.

15.   Paleontologists say they have found the first compelling fossil evidence that long ago, snakes grew legs.

16.   Probably, based on structural features and fossil evidence, though some scientists studying DNA evidence suspect otherwise.

17.   Researchers from the California Institute of Technology offered new support Thursday for the claim by NASA scientists that a meteorite holds fossil evidence of primitive Martian life.

18.   Scientists had said there was still insufficient fossil evidence to enable an understanding of how the large hyoid bone might have influenced the production of vocalizations.

19.   U.S. and British research teams have submitted fossil evidence of bacterial activity embedded in meteorites recovered from the Antarctic and believed to be of Martian origin.

20.   Ward, funded by the National Science Foundation, has been in the Karoo Desert looking for fossil evidence from this time period known as the Late Permian.