Sand Dollars (Mepygurus marmonti) - Madagascar Ca)₈Al₆Si₆O₂₄ (S

Ca)₈Al₆Si₆O₂₄ (S

This specific shade of blue would go on to be used by many artists

Local tribes will often use these fossils as forms of currency and trade

the latest research suggests otherwise

Flexicalymene ouzregui are formed in mud concretions dating back to 450 million years ago

Sand Dollars (Mepygurus marmonti) - Madagascar Ca)₈Al₆Si₆O₂₄ (SAlthough sand dollars can still be found on beaches today, this species is extinct and a distant relative. Sand dollars did not appear on the evolutionary tree until the Paleocene (~60 million years ago). Mepygurus marmonti dates back to the Late Jurassic Period, roughly 150 million years ago. Even though they may look harmless, these were actually predatory creatures, often feeding on the larva of crustaceans. These specimens also possess pentameral