1. Conservation Science Division, National Research Institute of Cultural Heritage, Deajeon 34122, Republic of Korea
2. Department of Geology, Kyungpook National University, Daegu 41566, Republic of Korea
3. Jinju Pterosaur Tracks Museum, Jinju City, Jinju 52857, Republic of Korea
4. Conservation Science Center, National Research Institute of Cultural Heritage, Daejeon 32432, Republic of Korea
5. West Sea Cultural Heritage Division, The National Research Institute of Maritime Cultural Heritage, Taean 32132, Republic of Korea