Divers find ancient monkey fossil
The researchers believe the fossil to be around 3,000 years old, but say the species itself could be very ancient.
This reveals clues about the origin of primates in the region.
It also suggests that many ecologically valuable treasures could be discovered by the unusual field of "underwater palaeontology".
Dr Alfred Rosenberger from Brooklyn College in New York, US, led the examination of the creature's bones, the results of which were published in the Royal Society journal Proceedings B.
He explained that the bones, which included a skull that was almost complete, were found by a team of scuba divers who were exploring an underwater cave in the area.
"It's miraculous that they even saw it," he told BBC News.
"When they discovered it, they were fearful the bones were exposed, so they moved the material to a little nook to protect it."
Having sought official permission to remove the fossil from the cave, Dr Rosenberger returned to with the scuba divers to retrieve it in October of last year.
The divers packed the skeleton into tupperware boxes in order to bring it safely to the surface; Kazinform cites BBC. See www.news.bbc.co.uk for full version.