Eyrena tatei, Cyrenopsis australiensis, Cyrenopsis meeki Bulldog Shale, Early Cretaceous (Aptian) Coober Pedy, South Australia, Australia In a unique combination of fossil and gemstone, over 20 opalized shells on matrix display the stunning opal replacement unique to their locality. During the Cretaceous, an inland sea of significant size existed in Australia. The remains of ancient shellfish, such as the present examples, were embedded and fossilized in the seabed. This natural assemblage was probably the result of a storm surge that covered and killed a vast carpet of clams and mussels. From the George Lee collection of Southern California. Cluster on stand measures 12 ½ x 12 x 7in, Cluster measures 12 ½ x 11 ½ x 4 ½in
Eyrena tatei, Cyrenopsis australiensis, Cyrenopsis meeki Bulldog Shale, Early Cretaceous (Aptian) Coober Pedy, South Australia, Australia In a unique combination of fossil and gemstone, over 20 opalized shells on matrix display the stunning opal replacement unique to their locality. During the Cretaceous, an inland sea of significant size existed in Australia. The remains of ancient shellfish, such as the present examples, were embedded and fossilized in the seabed. This natural assemblage was probably the result of a storm surge that covered and killed a vast carpet of clams and mussels. From the George Lee collection of Southern California. Cluster on stand measures 12 ½ x 12 x 7in, Cluster measures 12 ½ x 11 ½ x 4 ½in
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