Lucknow, April 4 -- In a recent discovery, scientists have found a culm of a thorny bamboo fossil. Thorns are a rare trait found in only three to four genera out of the 115 known bamboo genera. The discovery of the petrified fossil in Manipur, estimated to be as old as 35 million years, was made by scientists at the Birbal Sahni Institute of Palaeosciences (BSIP). It is particularly significant as it is the oldest thorny bamboo fossil found in Eurasia to date....