The lost skull

bones found is  submerged Mexican  cave give clues about  the  first Americans diver Susan bird cleans the  skulls  with a brush. A man  once dive more than 900 feet  (274m) underwater  without  an oxygen supply. caused by dropping  sea levels erosion. Over time  sea levels rose  again and water flooded the  cave burying Naia for the  12 millennia. A Link to the past  by  examining bones  and  Other items found nearby teeth  experts  ran DNA  tests to assess  that Naia  is a direct ancestor of presentday  Native Americans. Naia,s  DNA  also  matched with people native to Siberia a prat of Russia. Scientists have thought that ancient people from  this region crossed to North America  on land  exposed between  what  in new  Russia and Alaska  during  the  last ice age.  They were the first humans to inhabit the Americas and Naia proves how  far south they went .Today Naia,s  skulls is in a lab.Researchers are still studying here skull to lean about  early Americans so she can continue to shed light  on past.The water in which naia was found helped preserve her skull. The yucatan peninsula has 2,500 maya ruins. In 2007 a team scuba  divers swimming of  Mexico,s yucatan  peninsula came across an eerie,  but exciting find Deep within an  unwatchable cave in a chamber the size of  two basketball courts was the oldest couple human skeleton ever found it the Americas . These ancient remains hold  clues to ultimately reveal new  things about the first people to live in North  America. A jaw Dropping find  experts suspected the remains belongs to  a teenage girl who lived in the last ice age some 12,000 years ago.  They  named  Naia  after a sea creature  in Greek myths and  assessed that  she likely died after falling into a large hole. from a called national geographic kids  almanac.