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VOLGA RIVER, RUSSIA
细节
A SPLIT AMMONITE
VOLGA RIVER, RUSSIA
A Speetoniceras sp. from the Jurassic (200-145 million years ago) split, composite and polished, supported on stands
14in (36cm.) diameter
VOLGA RIVER, RUSSIA
A Speetoniceras sp. from the Jurassic (200-145 million years ago) split, composite and polished, supported on stands
14in (36cm.) diameter