A BITTEN AMMONITE SOUTH DAKOTA From the upper Cretaceous, Fox Hills Formation, (circa 65 million years ago) the specimen of Sphenodiscus splendens showing opal-like iridescence, with pathological markings. 13in. (33cm.) diameter
A BITTEN AMMONITE SOUTH DAKOTA From the upper Cretaceous, Fox Hills Formation, (circa 65 million years ago) the specimen of Sphenodiscus splendens showing opal-like iridescence, with pathological markings. 13in. (33cm.) diameter
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.jpg?w=400 "Source: Christie's")
.jpg?w=400 "Source: Christie's")
.jpg?w=400 "Source: Christie's")
.jpg?w=400 "Source: Christie's")
.jpg?w=400 "Source: Christie's")
.jpg?w=400 "Source: Christie's")
.jpg?w=400?width=1600&quality=70 "Source: Christie's")
.jpg?w=400 "Source: Christie's")
.jpg?w=400 "Source: Christie's")
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.jpg?w=400 "Source: Christie's")
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