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December 2, 2012

Geology Word of the Week: E is for Eurypterid

def. Eurypterid: 1. A group of extinct arthropods┬áthat were fearsome marine predators of the Paleozoic. There were over 200 different species of eurypterid, and they ranged from very small (less than 20 cm) to very large (greater than 8 feet). Because of their long tail, eurypterids are sometimes called “sea scorpions.” Indeed, they are closely related to today’s scorpions and other arachnids. One species of eurypterid, Eurypterus remipes, is the …

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