1.   On a visit to Samos, she studied a rich collection of prehistoric bones and skulls with which the ancients must have been familiar.

2.   Or ponder prehistoric bones,

3.   There, scientists dredge up prehistoric bones.

4.   As fossil remains from the Pliocene era have been found in Macedonia before, Mladenovski suggested there could be more prehistoric bones in this particular region.

5.   Scientists from the Novosibirsk museum went to the site this summer, after other prehistoric bones were unexpectedly uncovered there last year.

6.   Prehistoric animal bones, including an mammoth tusk, have been dug up at a construction site in Beijing, it was reported Tuesday.