autochthonous

1. (biology, medicine) Originating where found; found where it originates.Examples: "When, in 1858, Joseph Lister amputated the right leg of a six-year-old girl suffering from gangrene, he noted that the autochthonous blood clot extended down the anterior tibial artery as far as the commencement of the gangrene."not-comparable

2. (geology) Buried in place, especially of a fossil preserved in its life position without disturbance or disarticulation.Examples: "Death and burial may be simultaneous, resulting in a preserved snapshot of an autochthonous assemblage that may be compared directly with present day ecosystems."not-comparable