Where's the body?
There was no gorilla body till 1847...
There was no such thing as a mountain gorilla till 1905...
The Coelacanth was extinct since the Cretaceous... till one as caught alive in 1938.
Sasquatch's African cousin, the Bili Ape as considered mythical (even depicted as a monster in the 1996 Hollywood movie "Congo") till 2003 when a troop of these giant (6' 300 lbs) chimps (maybe a chimp/gorilla hybrid) were found in the Congo by Dr Shelley Williams.
There is still no Bili Ape body. Yet these giant semi-upright apes are accepted as a new species (based on DNA; foortprints; scat and photographs).
Maybe edumacating yo'self is in order?
The Luke