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VOLGA RIVER, RUSSIA
细节
A SPLIT AMMONITE
VOLGA RIVER, RUSSIA
Speetoniceras sp. from the Jurassic (200-145 million years ago) split and polished to reveal internal chambers, supported on custom stands
18in. (46cm.) wide
VOLGA RIVER, RUSSIA
Speetoniceras sp. from the Jurassic (200-145 million years ago) split and polished to reveal internal chambers, supported on custom stands
18in. (46cm.) wide