3Fossil sites
Koka Formation
Koka Formation in Japan: 3 fossil sites. Typical age: 4–3 million years (Neogene).
3Fossil sites
0Finds
4–3 million yearsTypical age
NeogeneMain period
Where its fossils were found
Neogene
By geological period
Neogene3
Towns with the most fossil sites nearby
Other formations of the same period
Neogene
Itahana Formation 28Kubota Formation 22Shimajiri Formation 19Fujina Formation 18Kanomatazawa Formation 18Moniwa Formation 15Senhata Formation 15Tentokuji Formation 15Meshikuni Formation 14Kunugidaira Formation 13Akeyo Formation 12Ogawa Formation 10Aoki Formation 10Kamicharo Formation 10Ainoura Formation 10Kurosedani Formation 10Yagii Formation 9Yoshino Formation 9Nagura Gravel 9Bessho Formation 9Toyohama Formation 9Zushi Formation 9Tsubusagawa Formation 9Tano Formation 8