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View Silicified Middle Ordovician trilobites By H. B. Whittington 
Silicified Middle Ordovician trilobites
By H. B. Whittington
View Annotated index of fossil and recent silicoflagellates and ebridians with descriptions and illustrations of validly proposed taxa By Alfred R. Loeblich 
Annotated index of fossil and recent silicoflagellates and ebridians with descriptions and illustrations of validly proposed taxa
By Alfred R. Loeblich