Siliceous protistan (= unicellular) microfossils, commonly with complex and ornate skeletons. Related Articles: A field guide to Barbados (Part 1): IntroductionFossils of the Carpathian Basin (Part 2): The Triassic – ancient oceans, ammonites and argumentsExploring the Jurassic at Zalas Quarry, southern Poland« Back to Glossary Index