The group of scientists provided first estimates that a 5.5 square km land extending from Brazil to French Guiana has critically endangered trees.
"Many of the species that we suggest may be threatened are used by Amazonian residents on a daily basis, and many others are crucial to Amazonian economies," said ecologist Nigel Pitman from the Field Museum in Chicago.
"Scientists have been raising the alarm about Amazonian deforestation for several decades, and projections indicate that forest loss will continue for the foreseeable future," said forest ecologist Hans ter Steege from the Netherlands-based Naturalis Biodiversity Center.
"The good news is that over the last 10 years the rate of forest loss in the Amazon has dropped dramatically," the ecologist said.
The 1950s marked a time when Amazonian forests have started to shrink as people exploited tens of thousands of square meters for farming, land utilization, and cattle ranching. The latest research gives the most accurate data as before there was no reliable information of the number of trees on the verge of extinction.
The new findings first published in the Science Advances journal claimed that the great Amazonian species may be protected by well-managed parks, recreation areas and reserves in the region. The Amazon was found to have 12 percent of forests cut and if the trend continues, the region will inevitably see 40 percent of trees extinct in 35 years.