Two elementary school-aged sisters from Tokyo have discovered a rare cicada fossil dating back about 300,000 years by breaking open a rock sold as a souvenir by a museum.
The Middle Pleistocene fossil was found by Maho Shinomiya, 11, a sixth grader, and her sister, Yuno, 8, a third grader, both from the city of Higashikurume. They share a love of fossils.
Maho became interested in fossils after seeing specimens collected by her mother, Chika, and being surprised to learn that living creatures can turn into stone.

AloJapan.com