autochthonous

adjective3

1. •
   Native to the place where found; indigenous.

   • Only human beings could live on this world and know that they were not autochthonous but had stemmed from Earthmen—and yet did the Spacers really know it or did they simply put it out of their mind? — 1983
2. •
   Originating where found; found where it originates.
3. •
   Buried in place, especially of a fossil preserved in its life position without disturbance or disarticulation.

   • Death and burial may be simultaneous, resulting in a preserved snapshot of an autochthonous assemblage that may be compared directly with present day ecosystems. — 1992