Fossilized upper jaw
The specimen is a portion of right upper jaw with 2 well-preserved molars and a broken one of a rhinoceros. Rhinoceros is a three-toed hoofed mammals having massive body, a large head with one or two horns on the snout. It measures 12.07 cm. x 6.87 cm. x 9.47 cm. and weighs about 800 grams.
Mr. de Asis discovered the fossil in May 13, 1965 in Fort Bonifacio. It was excavated in Pleistocene sediments believed to be part of thick deposits of compacted volcanic ash called Guadalupe Formation.