Page 231 - The Miracle of Electricity in the Body
P. 231
Starfish
Period: Paleozoic era,
Ordovician period
Age: 490-443 million years old
Birch leaf
Period: Cenozoic era,
Eocene epoch
Age: 50 million years old
Spittlebug
Period: Mesozoic era,
Cretaceous period
Age: 125 million years
old
Sequoia leaf
Period: Cenozoic era,
Eocene epoch
Age: 50 million years old
