Exhibit Guide


Grypania spiralis

A critical stage in the evolution of life was the development of multicellular organisms from primitive single-celled forms. The fossil Grypania spiralis exhibited here is 2.1 billion years old and is probably a multicellular alga. It is believed to be the oldest multicellular fossil.

Floor information

Exibit Contents
01The World's Oldest Mineral
02The World's Oldest Rock
03Pillow Lava
05Banded Iron Formations
07Grypania spiralis
09Mino Belt
10Kamiaso Conglomerate
11Japan's Oldest Rock
12CHIME Dating
13The Original Home of Japan's Oldest Rocks
14Hichiso and the Radiolaria
15Geological Model