ACCELERATING EDUCATION

ACCELERATING EDUCATION
Physics keeps life going-物理 依据 生命

Δευτέρα, 5 Μαρτίου 2018

Bivalves-GEOLOGY


Bivalves have inhabited the Earth for over 500 million years. They first appeared in the Middle Cambrian, about 300 million years before the dinosaurs. They flourished in the Mesozoic and Cainozoic eras, and abound in modern seas and oceans; their shells litter beaches across the globe.





Pecten (Eocene to Recent)

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