AIZUWAKAMATSU, Fukushima--A fossil believed to be of an ancestor of the crocodile, dating back some 155 million years--displayed and stored at the Gunma Museum of Natural History in east Japan since 1996--has been revealed to be a new species.... Team leader Junki Yoshida, 30, a curator at Fukushima Museum, began studying the crocodile fossil at the Gunma Museum of Natural History in 2017 when he was a graduate student.... According to Takakuwa, there were no crocodile experts in Japan, so the