110 million year old bird tracks found

Kim Jeong-Yul, an earth science professor at the Korea National University of Education in Cheongju, said his team discovered 100 fossilized prints on Changseon Island, 270 kilometers (162 miles) south of Seoul.

"The prints were found in a geological stratum created 110 million years ago," he said, adding each print was 4.5 centimeters (1.8 inches) wide and 5.1 centimeters long.