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Portal:Eurypterids

Eurypterids
Class
Eurypterids (sea scorpions) are an extinct group of arthropods that are related to arachnids and include the largest known arthropods to have ever lived. They are members of the extinct order Eurypterida (Chelicerata); which is the most diverse Paleozoic chelicerate order in terms of species. They were formidable predators that thrived in warm shallow water, in both seas and lakes. Although informally called "sea scorpions", only the earliest ones were marine (later ones lived in brackish or freshwater), and they were not true scorpions. According to theory, the move from the sea to fresh water had probably occurred by the Pennsylvanian subperiod.
Life restoration of Eurypterus remipes.
Life restoration of Eurypterus remipes.

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