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MADAGASCAR
细节
A SPLIT AMMONITE
MADAGASCAR
A Cleoniceras sp. from the early Cretaceous (approx. 135 million years ago), split and polished to reveal inner chambers of calcite.
7¼in. (18.5cm.) diameter
MADAGASCAR
A Cleoniceras sp. from the early Cretaceous (approx. 135 million years ago), split and polished to reveal inner chambers of calcite.
7¼in. (18.5cm.) diameter