Researchers at the University Malaya discovered the fossil tooth of a herbivorous dinosaur of the Ornithischian order.
The dinosaur tooth was about 13mm long and 10.5mm wide in preserved dimensions, said Dr Masatoshi Sone of the Department of Geology.
The fossil was discovered in a sedimentary rock formation in Pahang which dates back to the Cretaceous period, the period between 145 to 75 million years ago, 'thestar.Com' reported.
The specimen was found not far from the location of where the first dinosaur fossil was discovered.
The exact location of the discoveries could not be disclosed to prevent others from raiding the site, Sone said.
"The find implies that there was an established vegetated terrestrial ecosystem in Peninsula Malaysia during the Cretaceous period," he said.